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Revision 932013-07-29 - BrunoAltieri

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PACS instrument and calibration web pages

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Reducing PACS data

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  • HIPE (Herschel Interactive Processing Environment): The latest User Release HCSS version that you should use for reducing PACS data is HIPE v11.0 It can be downloaded from: http://herschel.esac.esa.int/HIPE_download.shtml. In the CIB (continuous integration build) this version corresponds to Track 11, build 2931.
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  • HIPE (Herschel Interactive Processing Environment): The latest User Release HCSS version that you should use for reducing PACS data is HIPE v11.0 It can be downloaded from: http://herschel.esac.esa.int/HIPE_download.shtml. In the CIB (continuous integration build) this version corresponds to Track 11, build 2934.
 
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    • However, for a technical assessment of the original chop/nod mode sensitivity intended for point-sources, we refer to SAp-PACS-MS-0711-09 (5.5 Mb).
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Photometer map-makers

Three fundamentally different map-makers are offered in Hipe 11 with ipipe scripts, starting from level 1 on pairs of obsids :

  • highpass filtering branch, where the bolometer timelines are highpass filtered to remove the 1/f noise at the expense of extended emission. It provides optimum sensitivity to point-sources.
  • MADmap, a GLS (generalized least square) map-maker, that allows to preserve extended emission at all scale.
  • JyScanam, a Java-version of the IDL Scanamorphos map-maker.

Another two public map-makers, also starting from level 1, widely used and both very easy to use are :

  • Scanamorphos, an IDL map-maker from Hélène Roussel (IAP) with an advanced and powerful destriper for PACS maps.
  • Unimap a light (memory wise) GLS map-maker from Lorenzo Piazzo ('La Sapienza' University of Rome ) under a free Matlab runtime environment, with an advanced pre-processing (drift correction, jump detection) and post-processing stages (bright sources).

 

PACS spectrometer calibration

  • PACS Spectrometer performance and calibration: The PACS Spectrometer Calibration Document v2.4 (16-June-2011) 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. Please note, the above linked document refers to the calibration status and performance of pipeline version v8.0. An update compatible with HIPE v9.0 release will be provided soon.
 
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