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Дата изменения: Thu Nov 13 14:27:42 2008
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XMM-Newton Science Analysis System


psechain (psechain-0.1.7) [???]

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Analysis options

There are 6 different analysis options:

1. 0:all : all the exposures corresponding to the chosen observation are reduced to calibrated event lists, unless disabled via the corresponding parameter (PN, MOS, RGS, OM, all set to "yes" by default). If the calibration index file or SAS summary file are missing from the working directory they are created in a previous step. In addition, source spectrum, light curve and response matrices are extracted using the user defined coordinates as input for the center of the source region (or, if not specified by the user, the coordinates are taken from the SAS summary file). The EPIC data is then searched for source detections, via edetect_chain. By default, for the EPIC data, if more than one exposure is present, these actions are taken over the event list corresponding to the longest observation. In the case of EPIC MOS in Timing, the timing observation is analysed, leaving out the imaging part of the exposure corresponding to the outer CCDs. Also, RGS spectra are derived together with response matrices, fluxed spectra and exposure corrected and background subtracted light curves. In the case of OM data, all the products from running omchain are generated, using the default parameters.

2. 1:events: this option runs epproc, emproc, rgsproc, omichain, all with default parameters,

3. 2:gti: starting from the calibrated EPIC event lists, this option optimizes signal to noise ratio through definition of GTIs for graphically chosen source and background area,

4. 3:edetectchain: starting from EPIC event lists, source detection is performed with edetect_chain

5. 4:epic_spectra: either using the GTIs produced by the "MaxSNR" method, or by running (default) eregionanalyse, source and background spectra + corresponding response matrices are derived,

6. 5:epic_lightcurve: either using the GTIs produced by the "MaxSNR" method, or by running (default) eregionanalyse, exposure corrected and background subtracted light curves are produced via epiclccorr,

7. 6:rgs_lightcurve: starting from the calibrated RGS event lists, this option creates RGS background substracted lightcurves running rgslccorr.