Difference: HipeWhatsNew14x (30 vs. 31)

Revision 312015-12-02 - JeroenDeJong

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What's coming up in HIPE 14

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  • Updates to high level products: Photometry level 2.5 and the creation of the Spectroscopy levels 2.5 and 3 (not really products but tables of spectra).
    • Photometer: Maps of solar system objects have been created for this version.
    • Spectrometer: Tables of spectra in level 2.5 and 3, as mentioned above.
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  • Unimap mapper has been upgraded to the latest version and there are new scripts making use of JScanam. There is also a script to generate drizzled cubes.
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  • Unimap mapper has been upgraded to the latest version.
  • There are new scripts making use of JScanam. There is also a script to generate drizzled cubes.
 
  • New spectroscopy calibration for extended sources which also works for off-centre point sources. New beam calibration and background model.
  • New useful and analysis scripts to account for these calibration changes (beam and background related).
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  • A new task runPacsSpg has been introduced, with which users can run the full PACS SPG pipeline from within HIPE.
  SPIRE
  • FTS
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PACS

Pipeline

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* A new task runPacsSpg has been introduced, with which a user can run a full SPG pipeline within HIPE, starting from the level-0 data in an observation context from the HSA, or even from the raw telemetry files when they are available.
 

Photometry

  • Level2.5 products:
    • Unimap and Jscanam maps are now generated for Solar System Objects, from combined scan and cross-scan observations.
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  • SPG scripts:
    • The range scan observations are now flatfielded: using the spline fitting method for ranges longer than 5 microns, and using the line scan flatfielding for the shorter ranges
    • The interpolated cubes are no longer produced for oversample range scan mapping observations, and they also have a smaller spaxel size of 3" (rather than 4.7" before).
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    • The interpolation algorithm in specInterpolate produces now NaN values in case one of the input spaxels has a NaN value, instead of producing skewed values due to a missing flux value. This results in more NaN values in the interpolated cubes, but avoids non-reliable values instead.
 

Calibration

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Photometry

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Spectroscopy

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  • There is a new Extended Source Correction calibration file (ExtendedSourceLoss, used in the pipeline tasks specRespCal and specRespCalToTelescope) which produces a better spatial flatfield for the PACS spectrometer. The fluxes of the spaxels of all cubes will be increased by ~30% in the blue to a decrease of ~5% in the red. The calibration file can be inspected to extract the curve:

    w = calTree.spectrometer.extendedSourceLoss["wavelength"].data
    f = calTree.spectrometer.extendedSourceLoss["fraction"].data

  • For point sources calibrated with extractCentralSpectrum, this extended source correction is taken out before the point source corrections are computed. However, if working with off-centred point sources and using the tasks extractSpaxelSpectrum and pointSourceLossCorrection, this correction is not taken out, and hence the results will be incorrect. An extra task/function is necessary: to get this, raise a helpdesk ticket.
  • New Beam calibration files have been delivered, differing from the previous files only in the way they are normalised. These will be used in a new task being developed in HIPE 15, and do not impact on HIPE 14 or SPG 14 in any way.
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  • A slightly updated telescope background model for use in the Pointing Offset Correction pipeline script for point sources has been developed. This update is to allow better consistency between the "POC" script and the default pipeline script "Telescope normaliation", for chopNod AOTs. The changes are at the percent level and largest in band B3A.

Analysis tools

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Photometry

  • The PhotometryConvolveResolution Kernel script was added within the PACS Useful Script section. This script convolves and regrids a map at a certain wavelength to the PSF of another map at longer wavelength, by using an appropriate kernel.
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Spectroscopy

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Product changes

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  • Many improvements to the descriptions and/or units of the header meta keywords.
  • All keywords have now a corresponding 8 character FITS keyword, so that the headers are easier to read with other software.
 

Photometry

  • The error layer within Unimap Level 2.5 products is renamed as stdDev, being the standard deviation computed at every sky pixel with respect to the samples that are falling on it. It can be properly assumed as the error map only if associated to the Nave map.
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Spectroscopy

  • Interpolated cubes: Cubes produced by the task specInterpolate now have a spaxel size of 3".
  • Interpolated cubes: Are no longer provided for oversampled mapping observations.
 
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