ISOCAM Interactive Analysis User's Manual Version 5.0 - ISO - ESA

13.4. CALIBRATING A PDS THE OLD WAY 111
4. Try another calibration using deglitch method MM, stabilisation method s90 and the
CAL-G flat.
CIA> lw6_raster = original_lw6_raster
CIA> calib_raster, lw6_raster, /dark, deglitch=’mm’, stab=’s90’, $
CIA> flat=’calg’, raster=’proj’
CIA> lw6_raster_mm = lw6_raster.raster
This process of calibration and re-calibration may be repeated ad nauseum.
5. Finally to save your work, use IDL’s SAVE with the xdr option for portability:
CIA> save, filename=’lw6_raster’, lw6_raster, lw6_raster_mm, $
lw6_raster_spat,/xdr
13.4.2 calib cvf
Calibration of the CVF PDS is similar to that of the raster PDS in Section 13.4.1, the only
difference being that you don’t have a MOSAIC to create from the EXPOSUREs in a CVF
observation.
Our calibration example here follows the slicing example of Section 13.1.5:
1. It is a good idea to begin by making a copy of the uncalibrated CVF PDS.
CIA> original_cvf_pds = cvf_pds
2. The CVF PDSispassedtocalib cvf for calibration:
CIA> calib_cvf, cvf_pds, stab=’s90’, deglitch=’spat’, flat=’calg’, $
CIA> dark=’calg’
Our call to calib cvf specified using the spatial deglitching technique, the s90 method of
stabilisation and the CAL-G DARK and FLAT.
3. As for a raster PDS(see Section 13.4.1), you can inspect the quality of the calibration of
your CVF PDS with x3d and xsnr. However, there is no MOSAIC image to be displayed.
4. You can reassign cvf pds with the uncalibrated CVF PDS and run calib cvf on it again.
CIA> cvf_pds = original_cvf_pds
CIA> calib_cvf, cvf_pds, deglitch=’mm’, stab=’s90’, /flat
5. And you can finally save your work with IDL’s save:
CIA> save, filename=’cvf_pds’, cvf_pds, /xdr