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XMM-Newton Science Analysis System


rmfgen (rmfgen-1.55.1) [xmmsas_20080701_1801-8.0.0]

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Description

Further information aabout the scientific use and accuracy of this task may be found in the document, XMM-SOC-PS-TN-0043, (available from http://xmm.vilspa.esa.es/calibration/)

Reformat the detector response and energy bounds information provided by the CAL for the given instrument, corrects for instrumental effects specific to the event selection criteria used and writes the result to a specified dataset (the Redistribution Matrix File or RMF). The dataset conforms to the OGIP standard ([3]).

The RMF matrix generated by rmfgen describes the response of the instrument as a function of energy and PI channel; PHA channel responses can not be generated by this task.

This dataset can be used in conjunction with the Ancillary Response File (ARF) dataset (generated by arfgen) to perform spectral analysis, the most commonly used analysis package being XSPEC.

Note that details of individual CCF constituents and how the CAL processes such data are beyond the scope of this document, and the reader should refer to the Calibration Access and Data Handbook for such information ([1]).

The following list summarises the current and planned features of rmfgen:

Item	Description	Status
1	Grouping of response data above a threshold value	implemented
2	Channel rebinning	implemented
3	Spectrum-response channel range matching	implemented
4	Observing mode dependence	implemented
5	Spatial dependence and averaging	implemented
6	User-defined energy grid	implemented
7	DSS support (including eg pattern selection)	implemented
8	Modelling for spectral distortion due to pile-up	initial implementation, not available
9	Modelling of spectral distortion due to Charge Transfer Inefficiency (CTI)	to be coded

Items 1-7 are described in more detail below. The remaining items are discussed in the future developments section ().