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Дата изменения: Fri Jan 10 23:43:01 2003
Дата индексирования: Sat Dec 22 08:12:10 2007
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Поисковые слова: trifid nebula

XMM-Newton Science Analysis System


rmfgen (rmfgen-1.48.5) [xmmsas_20030110_1802-5.4.1]

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• rmfgen generates the RMF based on the properties of only one CCD chip of the instrument. In the case of the MOS, this is central chip. In the case of the PN, this is chip 1, ie the chip closest to the optical axis in quadrant 0. A mechanism for providing an emission-weighted RMF will be implemented once DSS support has been coded.

• The RGS is addressed by the task rgsrmfgen.

• The size of the o/p RMF is dependent on the spectrum binsize and the number of bins in the energy grid, and can be very large. Heavy consumption of disk space is expected. Memory consumption will also be high as the full RMF is held in memory before being written to disk. Note that the pile-up correction requires knowledge of the entire uncorrected response matrix during each row construction, but accesses this from the CAL, not from memory.