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Дата изменения: Thu Jun 29 00:12:24 2006
Дата индексирования: Sat Dec 22 12:37:12 2007
Кодировка:

XMM-Newton Science Analysis System


rgsbkgmodel (rgsbkgmodel-1.3.2) [xmmsas_20060628_1801-7.0.0]

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Algorithm

 compute the background lightcurve of the problem event file applying
 the following selection expression

 CCDNR==9 AND (XDSP_CORR < -3.E-4 OR XDSP_CORR > 3.E-4)

 From the lightcurve, calculate the fraction of the total time for
 each of the pre-defined levels of background.

 Compute the background template spectra by weighting each of the
 template spectra by the corresponding factor calculated from the
 ligthcurve.