Chapter 4. PACS Products Description

Table of Contents

4.1. PACS observational products
4.1.1. PACS Observation Context metadata
4.1.2. PACS photometry level-0 context
4.1.3. PACS photometry level-0.5 context
4.1.4. PACS photometry level-1 context
4.1.5. PACS photometry level-2 context
4.1.6. PACS photometry level-2.5 context
4.1.7. PACS photometry level-3 context
4.1.8. PACS spectroscopy level-0 context
4.1.9. PACS spectroscopy level-0.5 products
4.1.10. PACS spectroscopy level-1 products
4.1.11. PACS spectroscopy level-2 products
4.1.12. PACS spectroscopy level-2.5
4.1.13. PACS spectroscopy level-3
4.2. PACS calibration products
4.2.1. PACS Common Calibration Products
4.2.2. PACS Photometer Calibration products
4.2.3. PACS Spectrometer Calibration Products

4.1. PACS observational products

4.1.1. PACS Observation Context metadata

The PACS Observation Context Product contains a list of metadata keywords which give the majority of the parameters that identify the observation. These are examples for the three PACS modes:

4.1.1.1. ObservationContext for PACS Photometry

Table 4.1. Example of the metadata keywords contained in a PACS Photometry observation.

StringParameter  type (description="Product Type Identification")
StringParameter  creator (description="Generator of this product")
DateParameter  creationDate (description="Creation date of this product")
StringParameter  description (description="Name of this product")
StringParameter  instrument (description="Instrument attached to this product")
StringParameter  modelName (description="Model name attached to this product")
DateParameter  startDate (description="Start date of the observation")
DateParameter  endDate (description="End date of the observation")
StringParameter  formatVersion (description="Version of product format")
StringParameter  obsState (description="One of CREATED, LEVEL0_PROCESSED, LEVEL0_5_PROCESSED, LEVEL1_PROCESSED, LEVEL2_PROCESSED, LEVEL2_5_PROCESSED, LEVEL3_PROCESSED")
LongParameter  obsid (description="Observation Identifier")
LongParameter  odNumber (description="Operational Day Number count")
StringParameter  cusMode (description="CUS observation mode")
StringParameter  instMode (description="Instrument Mode")
StringParameter  obsMode (description="Observation mode name")
StringParameter  processingMode (description="Processing mode selected to execute the pipeline")
StringParameter  ConcatenatedOBSIDs (description="AORs concatenated with this obs in HSPOT")
StringParameter  observer (description="Observer name")
StringParameter  proposal (description="Proposal name")
StringParameter  pointingMode (description="Pointing mode")
DateParameter  slewTime (description="Scheduled start time of the slew")
StringParameter  origin (description="Site that created the product")
StringParameter  aorLabel (description="AOR Label as entered in HSpot")
StringParameter  aot (description="AOT Identifier")
DoubleParameter  equinox (description="Equinox of celestial coordinate system")
StringParameter  missionConfig (description="Mission configuration")
StringParameter  object (description="Target name")
StringParameter  raDeSys (description="Coordinate reference frame for the RA and DEC")
DoubleParameter  pmRA (description="Target's proper motion, RA", quantity="arcsec a-1")
DoubleParameter  pmDEC (description="Target's proper motion, Dec", quantity="arcsec a-1")
DoubleParameter  raNominal (description="Requested Right Ascension of pointing", quantity="deg")
DoubleParameter  decNominal (description="Requested Declination of pointing", quantity="deg")
DoubleParameter  ra (description="Actual Right Ascension of pointing", quantity="deg")
DoubleParameter  dec (description="Actual Declination of pointing", quantity="deg")
DoubleParameter  posAngle (description="Position Angle of pointing", quantity="deg")
StringParameter  telescope (description="Name of telescope")
StringParameter  velocityDefinition (description="The velocity definition and frame")
DoubleParameter  radialVelocity (description="Spacecraft velocity along the l-of-s of the telescope wrt the LSR: v / c = (lambda_rest - lambda) / lambda_rest", quantity="km s-1")
StringParameter  calVersion (description="Version of calibration tree used")
LongParameter  obsRequestId (description="Observation Request Identifier")
LongParameter  obsRequestVersion (description="Observation Request Version")
StringParameter  title (description="Title")
StringParameter  target (description="Target")
StringParameter  targetType (description="Target Type")
StringParameter  subinstrument (description="Sub Instrument")
StringParameter  observingMode (description="Observing mode summary")
LongParameter  overhead (description="Overhead")
LongParameter  tslewmin (description="Minimum slew time")
BooleanParameter  mapScanHomCoverage (description="HSPOT: scan map homogeneous coverage selected")
BooleanParameter  mapScanSquare (description="HSPOT: scan map square coverage selected")
DoubleParameter  fluxExtBlu (description="HSPOT: extended source flux estimate blue", quantity="mJy")
DoubleParameter  fluxExtRed (description="HSPOT: extended source flux estimate red", quantity="mJy")
DoubleParameter  fluxPntBlu (description="HSPOT: point source flux estimate blue", quantity="mJy")
DoubleParameter  fluxPntRed (description="HSPOT: point source flux estimate red", quantity="mJy")
DoubleParameter  mapScanAngle (description="HSPOT: scan map position angle", quantity="deg")
DoubleParameter  mapScanConstrFrom (description="HSPOT: scan map constraint angle from", quantity="deg")
DoubleParameter  mapScanConstrTo (description="HSPOT: scan map constraint angle to (deg)", quantity="deg")
DoubleParameter  mapScanCrossScan (description="HSPOT: scan map leg separation", quantity="arcsec")
DoubleParameter  mapScanLegLength (description="HSPOT: scan map leg length", quantity="arcmin")
LongParameter  mapScanNumLegs (description="HSPOT: number of scan map legs")
LongParameter  naifid (description="SSO NAIF identifier (DEPRECATED: use naifId instead)")
LongParameter  repFactor (description="HSPOT: number of map repetition")
StringParameter  blue (description="HSPOT: PACS blue filter selection (values blue1 or blue2)")
StringParameter  mapScanAngleRef (description="HSPOT: scan map reference (sky or inst)")
StringParameter  mapScanSpeed (description="HSPOT: scan map rate (high, medium or low)")
StringParameter  source (description="pointing mode: point: single, large: mapping")
DateParameter  odStartTime (description="Operational Day start time")
StringParameter  missionConfiguration (description="Mission Configuration version")
StringParameter  instrumentConfiguration (description="Instrument Configuration")
DateParameter  startTime (description="Start time (DEPRECATED, use startDate instead)")
DateParameter  endTime (description="End time (DEPRECATED, use endDate instead)")
DoubleParameter  BOL_VD_B_1 (description="Bias blue group 1")
BooleanParameter  BOL_VU_B_1 (description="Bias blue Voltage Up group 1")
DoubleParameter  BOL_VD_B_2 (description="Bias blue group 2")
BooleanParameter  BOL_VU_B_2 (description="Bias blue Voltage Up group 2")
DoubleParameter  BOL_VD_B_3 (description="Bias blue group 3")
BooleanParameter  BOL_VU_B_3 (description="Bias blue Voltage Up group 3")
DoubleParameter  BOL_VD_B_4 (description="Bias blue group 4")
BooleanParameter  BOL_VU_B_4 (description="Bias blue Voltage Up group 4")
DoubleParameter  BOL_VD_R_1 (description="Bias red group 1")
BooleanParameter  BOL_VU_R_1 (description="Bias red Voltage Up group 1")
DoubleParameter  BOL_VD_R_2 (description="Bias red group 2")
BooleanParameter  BOL_VU_R_2 (description="Bias red Voltage Up group 2")
DoubleParameter  compVersion (description="PACS compression algorithm version")
DoubleParameter  algoNumber (description="PACS compression algorithm number")
StringParameter  algorithm (description="PACS compression algorithm description")
DoubleParameter  compNumber (description="PACS compression algorithm number")
StringParameter  compMode (description="PACS compression algorithm model")
StringParameter  PACS_PHOT_GAIN (description="Photometer Gain")
StringParameter  PACS_PHOT_MODE (description="Bolometer readout mode")
DoubleParameter  solarAspectAngleMean (description="averaged Solar Aspect Angle", quantity="deg")
DoubleParameter  solarAspectAngleRms (description="standard deviation of the Solar Aspect Angle", quantity="deg")
DoubleParameter  mapScanVelocity (description="Nominal scanning velocity", quantity="arcsec s-1")
StringParameter  processingParams (description="All the observation identifiers, separated by commas, involved in the production of level 2.5/level 3 products")
                             


4.1.1.2. ObservationContext for PACS Line Spectroscopy

Table 4.2. Example of the metadata keywords contained in a PACS Line Spectroscopy observation.

StringParameter  type (description="Product Type Identification")
StringParameter  creator (description="Generator of this product")
DateParameter  creationDate (description="Creation date of this product")
StringParameter  description (description="Name of this product")
StringParameter  instrument (description="Instrument attached to this product")
StringParameter  modelName (description="Model name attached to this product")
DateParameter  startDate (description="Start date of the observation")
DateParameter  endDate (description="End date of the observation")
StringParameter  formatVersion (description="Version of product format")
StringParameter  obsState (description="One of CREATED, LEVEL0_PROCESSED, LEVEL0_5_PROCESSED, LEVEL1_PROCESSED, LEVEL2_PROCESSED, LEVEL2_5_PROCESSED, LEVEL3_PROCESSED")
LongParameter  obsid (description="Observation Identifier")
LongParameter  odNumber (description="Operational Day Number count")
StringParameter  cusMode (description="CUS observation mode")
StringParameter  instMode (description="Instrument Mode")
StringParameter  obsMode (description="Observation mode name")
StringParameter  processingMode (description="SPG pipeline processing mode selected")
StringParameter  observer (description="Observer name")
StringParameter  proposal (description="Proposal name")
StringParameter  pointingMode (description="Pointing mode")
DateParameter  slewTime (description="Scheduled start time of the slew")
StringParameter  origin (description="Site that created the product")
StringParameter  aorLabel (description="AOR Label as entered in HSpot")
StringParameter  aot (description="AOT Identifier")
DoubleParameter  equinox (description="Equinox of celestial coordinate system")
StringParameter  missionConfig (description="Mission configuration")
StringParameter  object (description="Target name")
StringParameter  raDeSys (description="Coordinate reference frame for the RA and DEC")
DoubleParameter  pmRA (description="Target's proper motion, RA", quantity="arcsec a-1")
DoubleParameter  pmDEC (description="Target's proper motion, Dec", quantity="arcsec a-1")
DoubleParameter  raNominal (description="Requested Right Ascension of pointing", quantity="deg")
DoubleParameter  decNominal (description="Requested Declination of pointing", quantity="deg")
DoubleParameter  ra (description="Actual Right Ascension of pointing", quantity="deg")
DoubleParameter  dec (description="Actual Declination of pointing", quantity="deg")
DoubleParameter  posAngle (description="Position Angle of pointing", quantity="deg")
StringParameter  telescope (description="Name of telescope")
StringParameter  velocityDefinition (description="The velocity definition and frame")
DoubleParameter  radialVelocity (description="Spacecraft velocity along the l-of-s of the telescope wrt the LSR: v / c = (lambda_rest - lambda) / lambda_rest", quantity="km s-1")
StringParameter  calVersion (description="Version of calibration tree used")
LongParameter  obsRequestId (description="Observation Request Identifier")
LongParameter  obsRequestVersion (description="Observation Request Version")
StringParameter  title (description="Title")
StringParameter  target (description="Target")
StringParameter  targetType (description="Target Type")
StringParameter  subinstrument (description="Sub Instrument")
StringParameter  observingMode (description="Observing mode summary")
LongParameter  overhead (description="Overhead")
LongParameter  tslewmin (description="Minimum slew time")
BooleanParameter  chopNod (description="HSPOT: True for chop/nod, else False")
BooleanParameter  faintLines (description="HSPOT: faint line mode selected")
BooleanParameter  gratScan (description="unchopped range scan observation?")
BooleanParameter  mapRasterAngleRefFrame (description="raster ref. frame aligned w: (T) instrument y-z, (F) sky")
BooleanParameter  refSelected (description="HSPOT: instrument reference frame chosen for the raster")
DoubleParameter  decoff (description="Actual declination of the off position", quantity="deg")
DoubleParameter  lineStep (description="HSPOT: raster line step", quantity="arcsec")
DoubleParameter  pointStep (description="HSPOT: raster column (point) step", quantity="arcsec")
DoubleParameter  raoff (description="RA of the off position for unchopped", quantity="deg")
DoubleParameter  redshiftValue (description="HSPOT: redshift")
LongParameter  mapGratScanOffRep (description="no. raster steps b4 off is visited")
LongParameter  naifid (description="SSO NAIF identifier (DEPRECATED: use naifId instead)")
LongParameter  userNODcycles (description="HSPOT: number of ABBA nod cycle repetitions")
StringParameter  fluxUnit (description="HSPOT: units for the estimated fluxes")
StringParameter  lWave (description="HSPOT: line central wavelengths")
StringParameter  lcontFlux (description="HSPOT: estimated continuum fluxes")
StringParameter  lineFlux (description="HSPOT: estimated line fluxes")
StringParameter  lineId (description="line ID")
StringParameter  lineWidth (description="HSPOT: estimated line widths")
StringParameter  lines (description="HSPOT: description of observed lines")
StringParameter  orderSel (description="HSPOT: blue band (order2: 50-70um, order3: 70-100um)")
StringParameter  redshiftType (description="HSPOT: redshift type: redshift or optical")
StringParameter  repeatLine (description="HSPOT: line scan repetitions")
StringParameter  source (description="pointing mode: point: single, large: mapping")
StringParameter  widthUnit (description="HSPOT: units for the estimated line widths")
DateParameter  odStartTime (description="Operational Day start time")
StringParameter  missionConfiguration (description="Mission Configuration version")
StringParameter  instrumentConfiguration (description="Instrument Configuration")
DateParameter  startTime (description="Start time (DEPRECATED, use startDate instead)")
DateParameter  endTime (description="End time (DEPRECATED, use endDate instead)")
DoubleParameter  compVersion (description="PACS compression algorithm version")
DoubleParameter  algoNumber (description="PACS compression algorithm number")
StringParameter  algorithm (description="PACS compression algorithm description")
DoubleParameter  compNumber (description="PACS compression algorithm number")
StringParameter  compMode (description="PACS compression algorithm model")
LongParameter  numSpecLines (description="Number of spectral lines")
StringParameter  Line1 (description="spectral line/range: wavelength, reps, id")
LongParameter  numRasterCol (description="HSPOT: no. raster cols: valid for rasters")
LongParameter  numRasterLines (description="HSPOT: no. raster lines: valid for rasters")
DoubleParameter  solarAspectAngleMean (description="averaged Solar Aspect Angle", quantity="deg")
DoubleParameter  solarAspectAngleRms (description="standard deviation of the Solar Aspect Angle", quantity="deg")
StringParameter  StartingTime (description="HSPOT: start time of the observation")
DoubleParameter  duration (description="HSPOT: Total duration of the observation", quantity="s")
DoubleParameter  rangeLow1 (description="Lower wavelength end of range scanned", quantity="micrometer")
DoubleParameter  rangeHigh1 (description="High wavelength end of range scanned", quantity="micrometer")
DoubleParameter  rangeLow2 (description="Lower wavelength end of range scanned", quantity="micrometer")
DoubleParameter  rangeHigh2 (description="High wavelength end of range scanned", quantity="micrometer")
BooleanParameter  containsB2AData (description="At least 1 line/range has been observed in band B2A")
BooleanParameter  containsB2BData (description="At least 1 line/range has been observed in band B2B")
BooleanParameter  containsB3AData (description="At least 1 line/range has been observed in band B3A")
                             


4.1.1.3. ObservationContext for PACS Range Spectroscopy

Table 4.3. Example of the metadata keywords contained in a PACS Range Spectroscopy observation.

StringParameter  type (description="Product Type Identification")
StringParameter  creator (description="Generator of this product")
DateParameter  creationDate (description="Creation date of this product")
StringParameter  description (description="Name of this product")
StringParameter  instrument (description="Instrument attached to this product")
StringParameter  modelName (description="Model name attached to this product")
DateParameter  startDate (description="Start date of the observation")
DateParameter  endDate (description="End date of the observation")
StringParameter  formatVersion (description="Version of product format")
StringParameter  obsState (description="One of CREATED, LEVEL0_PROCESSED, LEVEL0_5_PROCESSED, LEVEL1_PROCESSED, LEVEL2_PROCESSED, LEVEL2_5_PROCESSED, LEVEL3_PROCESSED")
LongParameter  obsid (description="Observation Identifier")
LongParameter  odNumber (description="Operational Day Number count")
StringParameter  cusMode (description="CUS observation mode")
StringParameter  instMode (description="Instrument Mode")
StringParameter  obsMode (description="Observation mode name")
StringParameter  processingMode (description="Processing mode selected to execute the pipeline")
StringParameter  OnOffPosition (description="Entire product: ON-src, OFF-src, Undefined")
StringParameter  observer (description="Observer name")
StringParameter  proposal (description="Proposal name")
StringParameter  pointingMode (description="Pointing mode")
DateParameter  slewTime (description="Scheduled start time of the slew")
StringParameter  origin (description="Site that created the product")
StringParameter  aorLabel (description="AOR Label as entered in HSpot")
StringParameter  aot (description="AOT Identifier")
DoubleParameter  equinox (description="Equinox of celestial coordinate system")
StringParameter  missionConfig (description="Mission configuration")
StringParameter  object (description="Target name")
StringParameter  raDeSys (description="Coordinate reference frame for the RA and DEC")
DoubleParameter  pmRA (description="Target's proper motion, RA", quantity="arcsec a-1")
DoubleParameter  pmDEC (description="Target's proper motion, Dec", quantity="arcsec a-1")
DoubleParameter  raNominal (description="Requested Right Ascension of pointing", quantity="deg")
DoubleParameter  decNominal (description="Requested Declination of pointing", quantity="deg")
DoubleParameter  ra (description="Actual Right Ascension of pointing", quantity="deg")
DoubleParameter  dec (description="Actual Declination of pointing", quantity="deg")
DoubleParameter  posAngle (description="Position Angle of pointing", quantity="deg")
StringParameter  telescope (description="Name of telescope")
StringParameter  velocityDefinition (description="The velocity definition and frame")
DoubleParameter  radialVelocity (description="Spacecraft velocity along the l-of-s of the telescope wrt the LSR: v / c = (lambda_rest - lambda) / lambda_rest", quantity="km s-1")
StringParameter  calVersion (description="Version of calibration tree used")
LongParameter  obsRequestId (description="Observation Request Identifier")
LongParameter  obsRequestVersion (description="Observation Request Version")
StringParameter  title (description="Title")
StringParameter  target (description="Target")
StringParameter  targetType (description="Target Type")
StringParameter  subinstrument (description="Sub Instrument")
StringParameter  observingMode (description="Observing mode summary")
LongParameter  overhead (description="Overhead")
LongParameter  tslewmin (description="Minimum slew time")
BooleanParameter  chopNod (description="HSPOT: True for chop/nod, else False")
BooleanParameter  gratScan (description="unchopped range scan observation?")
BooleanParameter  mapRasterAngleRefFrame (description="raster ref. frame aligned w: (T) instrument y-z, (F) sky")
BooleanParameter  refSelected (description="HSPOT: instrument reference frame chosen for the raster")
DoubleParameter  decoff (description="Actual declination of the off position", quantity="deg")
DoubleParameter  lineStep (description="HSPOT: raster line step", quantity="arcsec")
DoubleParameter  pointStep (description="HSPOT: raster column (point) step", quantity="arcsec")
DoubleParameter  raoff (description="RA of the off position for unchopped", quantity="deg")
LongParameter  naifid (description="SSO NAIF identifier (DEPRECATED: use naifId instead)")
LongParameter  userNODcycles (description="HSPOT: number of ABBA nod cycle repetitions")
StringParameter  bluWave (description="HSPOT: blue limits for all ranges")
StringParameter  density (description="HSPOT: wavelength sampling (nyquist/high)")
StringParameter  lcontFlux (description="HSPOT: estimated continuum fluxes")
StringParameter  lineFlux (description="HSPOT: estimated line fluxes")
StringParameter  lineWidth (description="HSPOT: estimated line widths")
StringParameter  orderSel (description="HSPOT: blue band (order2: 50-70um, order3: 70-100um)")
StringParameter  rangeId (description="HSPOT: wavelength range identifiers")
StringParameter  rangeSPOT (description="HSPOT: description of lines")
StringParameter  redWave (description="HSPOT: red limits for all ranges")
StringParameter  refWave (description="HSPOT: reference wavelengths for all ranges")
StringParameter  repeatRange (description="HSPOT: repetition factors for all ranges")
StringParameter  source (description="pointing mode: point: single, large: mapping")
StringParameter  widthUnit (description="HSPOT: units for the estimated line widths")
DateParameter  odStartTime (description="Operational Day start time")
StringParameter  missionConfiguration (description="Mission Configuration version")
StringParameter  instrumentConfiguration (description="Instrument Configuration")
DateParameter  startTime (description="Start time (DEPRECATED, use startDate instead)")
DateParameter  endTime (description="End time (DEPRECATED, use endDate instead)")
DoubleParameter  compVersion (description="PACS compression algorithm version")
DoubleParameter  algoNumber (description="PACS compression algorithm number")
StringParameter  algorithm (description="PACS compression algorithm description")
DoubleParameter  compNumber (description="PACS compression algorithm number")
StringParameter  compMode (description="PACS compression algorithm model")
LongParameter  numSpecLines (description="Number of spectral lines")
StringParameter  Line1 (description="spectral line/range: wavelength, reps, id")
LongParameter  numRasterCol (description="HSPOT: no. raster cols: valid for rasters")
LongParameter  numRasterLines (description="HSPOT: no. raster lines: valid for rasters")
DoubleParameter  solarAspectAngleMean (description="averaged Solar Aspect Angle", quantity="deg")
DoubleParameter  solarAspectAngleRms (description="standard deviation of the Solar Aspect Angle", quantity="deg")
StringParameter  StartingTime (description="start time of the observation")
DoubleParameter  duration (description="Total duration of the observation in seconds", quantity="s")
DoubleParameter  rangeLow1 (description="Lower wavelength end of range scanned", quantity="micrometer")
DoubleParameter  rangeHigh1 (description="High wavelength end of range scanned", quantity="micrometer")
DoubleParameter  rangeLow2 (description="Lower wavelength end of range scanned", quantity="micrometer")
DoubleParameter  rangeHigh2 (description="High wavelength end of range scanned", quantity="micrometer")
BooleanParameter  containsB2AData (description="At least 1 line/range has been observed in band B2A")
BooleanParameter  containsB2BData (description="At least 1 line/range has been observed in band B2B")
BooleanParameter  containsB3AData (description="At least 1 line/range has been observed in band B3A")
StringParameter  processingParams (description="All the observation identifiers, separated by commas, involved in the production of level 2.5/level 3 products")
StringParameter  ConcatenatedOBSIDs (description="AORs concatenated with this obs in HSPOT")
                             


4.1.2. PACS photometry level-0 context

The PACS photometry level-0 context is called Herschel-PACS Photometer Timeline (type HPPT). It contains contexts products respectively associated with the timelines of the averaged bolometer signals, associated mechanism positions, detector timing information, selected housekeeping parameter measures and engineering products to monitor the health of the instrument and assess the proper execution of the observation. Each context product contains a number of products or "slices". Slices are defined such that the data does not cross building block boundaries, and the resulting product does not exceed a certain size limit. The structure of HPPT is as follows (the product "type" is given in brackets):

Product description Product type
Herschel-PACS Photometry Timeline - Level 0 Context HPPT
  Photometry Averaged Blue Context HPPAVGB
    Photometry Averaged Blue Slice HPPAVGBS
  Photometry Averaged Red Context HPPAVGR
    Photometry Averaged Red Slice HPPAVGRS
  Photometry raw DecMec status Blue Context HPPDMCB
    Photometry raw DecMec status Blue Slice HPPDMCBS
  Photometry raw DecMec status Red Context HPPDMCR
    Photometry raw DecMec status Red Slice HPPDMCRS
  Photometry Nominal Housekeeping Context HPPHK
    Photometry Housekeeping Slice HPPHKS
  General Housekeeping Context HPGENHK
    General Housekeeping Slice HPGENHKS
  Engineering Context HPENG
    Telecommand verification Slice HPTCVERS
    Telecommand history Slice HPTCHISTS
    Event Slice HPEVENTS
    TM Packet Report HPTM_PACKET_REPORT
      HPTIME_VERIFICATION
      HPOBCP_STATUS
      HPOBCP_LIST
      HPMEMORY_DUMP
      HPMEMORY_CRC
      HPLINK_CONNECTION
      HPACT_OBCP_LIST

4.1.3. PACS photometry level-0.5 context

The following level-0.5 products are under definition for the PACS photometry AOTs. Slices are defined such that the data does not cross building block boundaries, and the resulting product does not exceed a certain size limit.

Product description Product type
PACS Photometry - level-0.5 Context HPPT
  Photometry level-0.5 Frames Blue Bolometer Context HPPAVGB
    Photometry level-0.5 Frames Blue Slice HPPAVGBS
  Photometry level-0.5 Frames Red Bolometer Context HPPAVGR
    Photometry level-0.5 Frames Red Slice HPPAVGRS

4.1.4. PACS photometry level-1 context

The following level-1 products are under definition for the PACS photometry AOTs. Slices are defined such that the data does not cross building block boundaries, and the resulting product does not exceed a certain size limit.

Product description Product type
PACS Photometry - level-1 Context HPPT
  Photometry level-1 Frames Blue Bolometer Context HPPAVGB
    Photometry level-1 Frames Blue Slice HPPAVGBS
  Photometry level-1 Frames Red Bolometer Context HPPAVGR
    Photometry level-1 Frames Red Slice HPPAVGRS

4.1.5. PACS photometry level-2 context

4.1.5.1. PACS photometry point source level-2 context

Product description Product type
PACS Photometer - level-2 context HPPT
  Photometer Point Source Product Blue Bolometer Context HPPDMAPB
    Photometer Point Source Product Blue Bolometer Slice HPPDMAPBS
  Photometer Point Source Product Red Bolometer Context HPPDMAPR
    PACS Photometer Point Source Product Red Bolometer Slice HPPDMAPRS
  Photometer Point Source Product Blue Bolometer with Astrometry Context HPPPMAPB
    Photometer Point Source Product Blue Bolometer with Astrometry Slice HPPPMAPBS
  Photometer Point Source Product Red Bolometer with Astrometry Context HPPPMAPR
    Photometer Point Source Product Red Bolometer with Astrometry Slice HPPPMAPRS

4.1.5.2. PACS photometry scan map level-2 context

Product description Product type
PACS Photometer - level-2 context HPPT
  Photometer Naive Map Blue Bolometer Context HPPNMAPB
    Photometer Naive Map Blue Bolometer Slice HPPNMAPBS
  Photometer Naive Map Red Bolometer Context HPPNMAPR
    Photometer Naive Map Red Bolometer Slice HPPNMAPRS
  Photometer PhotProject MAP Blue Bolometer Context HPPPMAPB
    Photometer PhotProject MAP Blue Bolometer Slice HPPPMAPBS
  Photometer PhotProject MAP Red Bolometer Context HPPPMAPR
    Photometer PhotProject MAP Red Bolometer Slice HPPPMAPRS

HPPNMAPB & HPPNMAPR contain the averaged signal map after pixel-to-pixel offset correction.

HPPPMAPB and HPPPMAPB are products of the type SimpleImage and consist in 5 datasets: image, coverage, stDev, HPFmask and error . These products are created by the high-pass filtered photProject pipeline, i.e., a simple projection of each frames, after running a temporal high-pass filter with a width of n=20 (i.e subtracting a median with a width of 2*n+1 frames) This allows to filter out a significant part of the 1/f noise at the expense of removing completely ALL spatial scales larger than this width (i.e., typically larger than 1 arcmin), and creating negative undershooting around bright sources along the scan direction. The dataset 'image' carries the scientific map, the dataset 'coverage' provides a measurement of the amount of data that falls onto one spatial pixel of the final map, the dataset 'HPFmask' is a mask of the sky regions where the high-pass filter is not applied, which corresponds to the source positions on the map, the dataset 'stDev' is the standard deviation map of the flux computed in the sky pixels and it provides a measurement of the noise in each pixel, the dataset 'error' provides the error map obtained by using the photCoverage2Noise task.

[Note] Note

All MadMap products have been removed from the Standard Product Generation (SPG) pipeline. This means that they will not be available in the archive.

4.1.6. PACS photometry level-2.5 context

Product description Product type
PACS Photometer - level-2.5 context HPPT
  Artifact Corrected MadMap Blue Map HPPCORMAPB
    Artifact Corrected MadMap Blue Map Slice HPPCORMAPBS
  Artifact Corrected MadMap Red Map HPPCORMAPR
    Artifact Corrected MadMap Red Map Slice HPPCORMAPRS
  MadMap Blue Map HPPMADMAPB
    MadMap Blue Map Slice HPPMADMAPBS
  MadMap Red Map HPPMADMAPR
    MadMap Red Map Slice HPPMADMAPRS
  Naïve MadMap Blue Map HPPNAVMAPB
    Naïve MadMap Blue Map Slice HPPNAVMAPBS
  Naïve MadMap Blue Red HPPNAVMAPR
    Naïve MadMap Blue Red Slice HPPNAVMAPRS
  High Pass Filtered photProject Blue Map HPPHPFMAPB
    High Pass Filtered photProject Blue Map Slice HPPHPFMAPBS
  High Pass Filtered photProject Red Map HPPHPFMAPR
    High Pass Filtered photProject Red Map Slice HPPHPFMAPRS
  JScanam Blue Map HPPJSMAPB
    JScanam Blue Map Slice HPPJSMAPBS
  JScanam Red Map HPPJSMAPR
    JScanam Red Map Slice HPPJSMAPRS
  Unimap Blue Map HPPUNIMAPB
    Unimap Blue Map Slice HPPUNIMAPBS
  Unimap Red Map HPPUNIMAPR
    Unimap Red Map Slice HPPUNIMAPRS

The PACS Photometer Level 2.5 context contains maps produced by using the JScanam, Unimap and photProject mappers, obtained by combining the scan and cross-scan AORs. The Level 2.5 products are of the type SimpleImage and consist of a dataset that contains the scientific map ('image' layer), the coverage map ('coverage' layer), plus other datasets provided for the specific mapmaker. HPPHPFMAPB and HPPHPFMAPR consist in 4 datasets: image, coverage, error and stdDev. They are the combinations, by using the Mosaic task, of the Level2 observations generated with the high-pass filtered photProject pipeline. HPPJSMAPB and HPPJSMAPR consist in 3 datasets: image, coverage and stDev. These products are generated by using the JScanam pipeline, an HIPE implementation of the 'destriper' mapmaker Scanamorphos. The dataset 'stDev' is the standard deviation map of the flux computed in the sky pixels and it provides a measurement of the noise in each pixel. HPPUNIMAPB and HPPUNIMAPR consist in 6 datasets: image, stdDev, coverage, pgls, gls and naive. These products are generated by using the Generalized Least Square mapmaker Unimap. The dataset 'image' carries the Weighted-GLS map, generally assumed as the most reliable scientific map, the datasets 'pgls', 'gls' and 'naive' are the Post-GLS, the GLS and the Naïve map, respectively, and the dataset 'stdDev' the standard deviation map computed at every sky pixel with respect to the samples that are falling on it, that can be properly assumed as the error map only if associated to the Naïve map.

4.1.7. PACS photometry level-3 context

Product description Product type
PACS Photometry - level-3 Context HPPT
  Photometry level-3 JScanam Red Mosaic Map Context HPPJSMAPR
    Photometry level-3 JScanam Red Mosaic Map Context Slice HPPJSMAPRS
  Photometry level-3 JScanam Blue Mosaic Map Context HPPJSMAPB
    Photometry level-3 JScanam Blue Mosaic Map Context Slice HPPJSMAPBS
  Photometry level-3 Unimap Red Mosaic Map Context HPPUNIMAPR
    Photometry level-3 Unimap Red Mosaic Map Context Slice HPPUNIMAPRS
  Photometry level-3 Unimap Blue Mosaic Map Context HPPUNIMAPB
    Photometry level-3 Unimap Blue Mosaic Map Context Slice HPPUNIMAPBS

The PACS level-3 photometric context contains map generated with the Mosaic task, which combines Level2.5 Unimap and Jscanam overlapping maps, on a given field and belonging to the same observing programme.

4.1.8. PACS spectroscopy level-0 context

The PACS spectroscopy level-0 context is called Herschel-PACS Spectrometer Timeline (HPST).It contains It contains contexts products respectively associated with a timeline of the averaged integration ramps, associated mechanism positions, detector timing information, selected housekeeping parameter measures and engineering products to monitor the health of the instrument and assess the proper execution of the observation. These contexts contain a number of products or "slices". Slices are defined such that the data does not cross building block boundaries, and the resulting product does not exceed a configured size limit. The HPST structure is as follows (the product "type" is given in brackets):

Product description Product type
Herschel-PACS Spectroscopy Timeline - Level 0 Context HPST
  Spectroscopy Raw Blue Context HPSRAWB
    Spectroscopy Raw Blue Slice HPSRAWBS
  Spectroscopy Raw Red Context HPSRAWR
    Spectroscopy Raw Red Slice HPSRAWRS
  Spectroscopy Slope fitted Blue Context HPSFITB
    Spectroscopy Slope fitted Blue Slice HPSFITBS
  Spectroscopy Slope fitted Red Context HPSFITR
    Spectroscopy Slope fitted Red Slice HPSFITRS
  Spectroscopy raw DecMec status Blue Context HPSDMCB
    Spectroscopy raw DecMec status Blue Slice HPSDMCBS
  Spectroscopy raw DecMec status Red Context HPSDMCR
    Spectroscopy raw DecMec status Red Slice HPSDMCRS
  Spectroscopy Nominal Housekeeping Context HPSHK
    Spectroscopy Housekeeping Slice HPSHKS
  General Housekeeping Context HPGENHK
    General Housekeeping Slice HPGENHKS
  Diagnostic Housekeeping Context HPDIAGHK
    Diagnostic Housekeeping Slice HPDIAGHKS
  Engineering Context HPENG
    Telecommand verification Slice HPTCVERS
    Telecommand history Slice HPTCHISTS
    Event Slice HPEVENTS
    TM Packet Report HPTM_PACKET_REPORT
      HPTIME_VERIFICATION
      HPOBCP_STATUS
      HPOBCP_LIST
      HPMEMORY_DUMP
      HPMEMORY_CRC
      HPLINK_CONNECTION
      HPACT_OBCP_LIST
  OGSE housekeeping Context HPOGSEHK
    PACS OGSE housekeeping Slice HPOGSEHKS
  CDMS simulator context HPCDMS
    PACS CDMS simulator slice HPCDMSS

4.1.9. PACS spectroscopy level-0.5 products

Product description Product type
PACS Spectroscopy level-0.5 context  
  Spectroscopy Slope fitted Blue Context HPSFITB
    Spectroscopy Slope fitted Blue Slice HPSFITBS
  Spectroscopy Slope fitted Red Context HPSFITR
    Spectroscopy Slope fitted Red Slice HPSFITRS

4.1.10. PACS spectroscopy level-1 products

Product description Product type
PACS Spectroscopy level-1 context  
  PACS Spectral Cube Blue HPS3DB
    PACS Spectral Cube Blue Slice HPS3DBS
  PACS Spectral Cube Red HPS3DR
    PACS Spectral Cube Red Slice HPS3DRS
  Absolute pixel response and dark current Blue HPSCALB
    Absolute pixel response and dark current Blue Slice HPS3CALBS
  Absolute pixel response and dark current Red HPSCALR
    Absolute pixel response and dark current Red Slice HPS3CALRS
  Spectroscopy Slope fitted Blue Context HPSFITB
    Spectroscopy Slope fitted Blue Slice HPSFITBS
  Spectroscopy Slope fitted Red Context HPSFITR
    Spectroscopy Slope fitted Red Co HPSFITRS

4.1.11. PACS spectroscopy level-2 products

Product description Product type
PACS Spectroscopy level-2 context  
  Pacs Spectroscopy 3D Projected Blue HPS3DPB
    Pacs Spectroscopy 3D Projected Blue Slice HPS3DPBS
  Pacs Spectroscopy 3D Projected Red HPS3DPR
    Pacs Spectroscopy 3D Projected Red Slice HPS3DPRS
  Pacs Spectroscopy 3D Rebinned Blue HPS3DRB
    Pacs Spectroscopy 3D Rebinned Blue Slice HPS3DRBS
  Pacs Spectroscopy 3D Rebinned Red HPS3DRR
    Pacs Spectroscopy 3D Rebinned Red Slice HPS3DRRS
  Pacs Spectroscopy 3D Drizzled Blue HPS3DDB
    Pacs Spectroscopy 3D Drizzled Blue Slice HPS3DDBS
  Pacs Spectroscopy 3D Drizzled Red HPS3DDR
    Pacs Spectroscopy 3D Drizzled Red Slice HPS3DDRS
  Pacs Spectroscopy 3D Interpolated Blue HPS3DIB
    Pacs Spectroscopy 3D Interpolated Blue Slice HPS3DIBS
  Pacs Spectroscopy 3D Interpolated Red HPS3DIR
    Pacs Spectroscopy 3D Interpolated Red Slice HPS3DIRS
  Pacs Spectroscopy 3D Equidistant Projected Blue HPS3DEQPB
    Pacs Spectroscopy 3D Equidistant Projected Blue Slice HPS3DEQPBS
  Pacs Spectroscopy 3D Equidistant Projected Red HPS3DEQPR
    Pacs Spectroscopy 3D Equidistant Projected Red Slice HPS3DEQPRS
  Pacs Spectroscopy 3D Equidistant Interpolated Blue HPS3DEQIB
    Pacs Spectroscopy 3D Equidistant Interpolated Blue Slice HPS3DEQIBS
  Pacs Spectroscopy 3D Equidistant Interpolated Red HPS3DEQIR
    Pacs Spectroscopy 3D Equidistant Interpolated Red Slice HPS3DEQIRS
  Pacs Spectroscopy 3D Equidistant Drizzled Blue HPS3DEQDB
    Pacs Spectroscopy 3D Equidistant Drizzled Blue Slice HPS3DEQDBS
  Pacs Spectroscopy 3D Equidistant Drizzled Red HPS3DEQDR
    Pacs Spectroscopy 3D Equidistant Drizzled Red Slice HPS3DEQDRS
    Pacs Spectroscopy 3D Equidistant Drizzled Blue Slice HPS3DEQDBS
  Pacs Spectroscopy 1D Spectrum Context Blue HPSSPECB
    Pacs Spectroscopy 1D Spectrum Context Blue Slice HPS3DEQDBS
  Pacs Spectroscopy 1D Spectrum Context Red HPSSPECR
    Pacs Spectroscopy 1D Spectrum Context Red Slice HPS3DEQDRS
  Pacs Spectroscopy Rebinned Cube as Table Blue HPSTBRB
    Pacs Spectroscopy Rebinned Cube as Table Blue Slice HPSTBRBS
  Pacs Spectroscopy Rebinned Cube as Table Red HPSTBRR
    Pacs Spectroscopy Rebinned Cube as Table Red Slice HPSTBRRS

HPS3DPB and HPS3DPR are products of type SpectralSimpleCube and consist of five datasets: image, coverage, error, ImageIndex and History. The dataset "ImageIndex" contains the wavelength values. The dataset "image" carries the scientific data, signal and fluxes, created by the specProject pipeline task. This task projects a rebinned cube (the HPS3DR product) onto a regular RA/Dec grid on the sky. The grid size (corners) are determined by the task using the RA and Dec information from the rebinned cube, the output pixel size (dx,dy) is the default 3 arcseconds for standard products. In this projected cube the number of bins and resolution in the wavelength domain do not change, the cube size is lambda x N x M, where "N" and "M" mean the resampled grid size. In case of mapping observations, "specProject" loops over all raster positions and combine rasters into a single grid by adding up for each spaxel the fluxes of the contributing spaxels multiplied by their overlap weights. The cube flux values are in Jy/pixel units, the wavelength is in microns.

HPS3DRB and HPS3DRR are products of type PacsRebinnedCube and consist of nine datasets: image, ra, dec, qualityControl, stddev, exposure, flag, waveGrid, History and ImageIndex. The dataset 'image' carries the scientific data created by the "specWaveRebin" pipeline task. This task constructs the lambda x 5 x 5 size IFU cube which is in general the 25 spatial pixels (spaxels) of the PACS spectrometer over the full depth of the observed wavelength range. Note that each spaxel is fed by 16 pixels. Samples from the 16 spectral pixels are rebinned in a grid which is dependent on the actual wavelengths and the oversampling/upsampling factors. The oversample factor is used to increase the number of wavelength bins by the formula bins*oversample, where the number of bins is based on the theoretical resolution of your observation. The upsample factor specifies how many shifts per wavelength bin to make while rebinning. Standard products are generated with oversample=2 and upsample=3 values. The cube flux values are in Jy/pixel units, the wavelength is in microns. In case the observation consists of several spectral ranges and/or raster positions then the product is sliced into datasets of logical blocks. Such a block contains a single spectral range for a single raster position.

The pipeline-produced cubes from PACS do not have a wavelength grid that is equidistant, i.e. the bins-sizes of the spectral grid are not equal at every wavelength, but rather they scale with resolution, which in turn scales with wavelength. This was done so that even for spectra which cover the entire SED of PACS (50—220μm) a Nyquist (or better) spectral sampling is achieved at all wavelengths. This means that the spectral grid is not defined via the third axis of the World Coordinate System (WCS), i.e. we do not have values for the reference wavelength and dispersion in axis 3. Instead, the wavelength grid is contained as a dataset in the cubes. Unfortunately, this can make it cumbersome to load PACS cubes into software other than HIPE and for their spectral grid to be immediately recognised. To combat this, we have created cubes with an equidistant wavelength grid. These can be found in the ObservationContexts processed by SPG 13, and they are also one of the a standalone browse products that are now provided via the HSA. These equidistant cubes are created from the final pipeline Level 2/2.5 cubes:

  • For Nyquist and oversampled mapping line scan observations: from the drizzled cubes (HPS3DEQD[R|B])

  • For Nyquist and oversampled mapping range scan observations: from the projected cubes (HPS3DEQP[R|B])

  • For all other observations (pointed and undersampled mapping, line and range scan): from the interpolated cubes (HPS3DEQI[R|B])

HPS3DDB and HPS3DDR are drizzled cubes created by the drizzle pipeline task that appear in Nyquist and oversampled mapping observations.

HPS3DIB and HPS3DIR are interpolated cubes created by the specInterpolate pipeline task and appear in pointed observations and undersampled maps. Interpolated cubes always have a spaxel size of 4.7".

HPS3TBRB and HPS3TBRR contain all the information that is in the rebinned cubes (the fluxes, errors, positions, etc) but in a tabular format.

For more information about the higher level PACS spectroscopy products, please refer to the Spectroscopy section of the PACS Products Explained manual (PPE).

4.1.12. PACS spectroscopy level-2.5

Product description Product type
PACS Spectroscopy level-2.5 context  
  Pacs Spectroscopy 1D Spectrum Context Blue HPSSPECB
  Pacs Spectroscopy 1D Spectrum Context Red HPSSPECR

There is a product in Level 2.5 for the subset of unchopped, rangeScan observations. This table, HPSSPEC[R|B], contains the extracted spectrum of the central spaxel, and the point source calibrated spectra "c1" and "c129" from the pipeline task extractCentralSpectrum. Since the point-source calibrated spectra are taken from the centre of the cube, it is necessary that the source is located within spaxel 2,2 (the central one). However, we make no determination that the target of the observation actually is a point source - that is up to the end-user to establish. These tables are also provided as standalone browse products.

4.1.13. PACS spectroscopy level-3

Product description Product type
PACS Spectroscopy level-3 context  
  Pacs Spectroscopy 1D Spectrum Context HPSSPEC

The spectrum tables from Level 2 for the pointed, chopNod, full SED observations, are concatenated into a single table which is placed in Level 3. This table, HPSSPEC, contains the extracted spectra for all the observations that were taken to cover the full spectral range (the full SED) of PACS for that target (this will be usually two, sometimes three, separate observations). Moreover, the red and blue camera, and all slices, are included this single table. This table is also provided as a standalone browse product.