TWiki> Public Web>PacsCalibrationWeb (revision 34)EditAttach

PACS instrument and calibration web pages

Observing with PACS

PACS data processing software

  • The corresponding PACS Data Reduction Guide (PDRG) is PDRG version 6 (February 2011, 3.7 MB).

  • Data reduction scripts are now available in HIPE under the menu: Pipeline --> PACS --> Photometer/Spectrometer

  • We also provide access to the latest stable developer build, used by the instrument experts at the ICC. Beware ! These developer builds do not undergo the same in-depth testing as the user releases. If you need a recent feature not yet available in the user release, you might install a latest stable developer build available at the HSC developer build page

PACS calibration file versions

  • When starting hipe, you will be informed if new calibration files are available. Clicking on 'show details' will show you the release note of the new calibration set, with details about the changes. You can choose to update to the latest version of the calibration files.
  • The history calibration files released to the community is provided here: PACS Calibration File History

PACS calibration and performance

Photometer calibration in scan maps.

  • Point Spread Function: PACS Photometer Point Spread function (5.5 M), version 1.01, 3 November 2010. A detailed document of the in-flight observed PSF. The accompanying tarball can be found here (31 Mb).
  • Herschel/PACS modelled point spread functions (3.1 Mb) is a related document presenting Zemax modelled point spread functions for both an `ideal' and an 'as built' Herschel telescope model. Tarballs with corresponding broad-band and monochromatic PSFs for these two cases are at http://pacs.ster.kuleuven.ac.be/pubtool/PSF. Since the models do not capture all effects found in the observed PSFs, they are useful only in addition to the observed PSFs but cannot replace them.

  • Point-source photometry: PACS uses 5 stars as primary calibrators with fluxes ranging from 0.6 to 15 Jy, plus other fainter stars and asteroids as secondary calibrators. A new responsivity calibration (version) will be deployed on the HCSS 7 track consistent with PICC-ME-TN-033 v1.01 and its associated encircled energy fraction (EEF). It improves the accuracy of photometry to 3% in the blue channel and 5% in the red channel. The new calibration is described in detail in the technical note"PACS photometer point-source flux calibration (3.1 Mb) (PICC-ME-TN-037), version 1.0, 12 April 2011.

  • Point-source observations:

PACS spectrometer AOTs

The PACS Spectrometer AOT design and observer's access to instrument observing modes is described in Chapter 6 of the PACS Observer's Manual. Guidelines to find the suitable observing mode and the optimization process of the overall observing strategy for various science cases are explained there. Dedicated documents are also available for each AOTs and their sub-modes in AOT Release Notes:

PACS high-sampling chop/nod mode for Line Spectroscopy and Range Spectroscopy AOTs

PACS SED and large range scan mode in Range Spectroscopy AOT

PACS unchopped grating scan mode for Line Spectroscopy and Range Spectroscopy AOTs - 2nd generation observing mode

PACS unchopped grating scan bright line mode for Line Spectroscopy AOT

PACS wavelength switching mode for Line Spectroscopy AOT - decommissioned 1st generation observing mode

PACS spectrometer calibration

  • PACS Spectrometer performance and calibration: The PACS Spectrometer Calibration Document provides details on the calibration accuracy and the necessary information to optimally interpret PACS spectroscopy observations. New issues of this document will be released with new versions of the pipeline and new versions of the calibration tree provided in the Herschel interactive data analysis system.

  • Data processing known issues of standard products: Browse quality Level 2 products are provided in the Herschel Science Archive. This summary page describes typical problems and caveats the observer needs to be familiar when looking at these preview products. Aspects of product quality which can be further optimized by interactive processing are also summarized here. The document refers to the version of data processing pipeline currently being used for processing of incoming Herschel data (version number provided therein).

-- BrunoAltieri - 12 April 2011

Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf ExtSrcPhotom.pdf r1 manage 3303.5 K 2011-04-12 - 18:26 BrunoAltieri  
PDFpdf PACSPSF_PICC-ME-TN-029_v2.0.pdf r1 manage 3171.5 K 2010-11-05 - 16:28 BrunoAltieri  
PDFpdf PACS_ChoppedLineRange_ReleaseNote_19Jan2010.pdf r1 manage 826.4 K 2010-11-05 - 16:51 BrunoAltieri  
PDFpdf PACS_SEDRange_ReleaseNote_10Mar2010.pdf r1 manage 899.5 K 2010-11-05 - 16:55 BrunoAltieri  
PDFpdf PACS_ScanMap_ReleaseNote_23Feb2010.pdf r1 manage 641.2 K 2010-11-05 - 16:29 BrunoAltieri  
PDFpdf PACS_SpectroscopyPerformanceCalibration_11Mar2010.pdf r1 manage 429.3 K 2010-11-05 - 16:58 BrunoAltieri  
PDFpdf PACS_UnchoppedReleaseNote_BrightLines_15Apr2011.pdf r1 manage 2378.2 K 2011-04-19 - 14:52 RolandVavrek  
PDFpdf PACS_Unchopped_ReleaseNote_20Sep2010.pdf r1 manage 1270.2 K 2010-11-05 - 16:56 BrunoAltieri  
PDFpdf PACS_WaveSwitching_ReleaseNote_20Jan2010.pdf r1 manage 417.5 K 2010-11-05 - 16:54 BrunoAltieri  
PDFpdf PICC-NHSC-TN-029.pdf r1 manage 975.7 K 2011-04-12 - 18:30 BrunoAltieri  
PDFpdf PhotMiniScan_ReleaseNote_20101104.pdf r1 manage 1987.2 K 2010-11-05 - 16:29 BrunoAltieri  
PDFpdf PhotMiniScan_ReleaseNote_20101112.pdf r1 manage 1988.8 K 2010-11-15 - 10:53 BrunoAltieri  
PDFpdf SimulPSP_v1.0.pdf r1 manage 5323.7 K 2010-11-15 - 11:16 BrunoAltieri  
PDFpdf aa14535-10.pdf r1 manage 1571.0 K 2010-11-04 - 16:23 BrunoAltieri  
PDFpdf bolopsfv1.01.pdf r1 manage 5658.9 K 2010-11-05 - 16:27 BrunoAltieri  
PDFpdf cc_report_v1.pdf r1 manage 2578.7 K 2011-04-12 - 18:30 BrunoAltieri  
PDFpdf pacs_bolo_fluxcal_report_v1.pdf r1 manage 3122.3 K 2011-04-12 - 19:40 BrunoAltieri  
PDFpdf pacs_drg.pdf r1 manage 3818.2 K 2011-02-14 - 14:58 BrunoAltieri PACS Data Reduction Guide, version 6
Edit | Attach | Watch | Print version | History: r162 | r36 < r35 < r34 < r33 | Backlinks | Raw View | Raw edit | More topic actions...
Topic revision: r34 - 2011-06-02 - RolandVavrek
 
This site is powered by the TWiki collaboration platform Powered by Perl