XMM-Newton Science Analysis System
eexpchipmap (lccorr-2.28) [xmmsas_20080701_1801-8.0.0]
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Description
eexpchipmap
performs essentially the same task as eexpmap, with the following differences:
- Both vignetted and non-vignetted exposure maps are calculated at the same time, thus saving a lot of time.
- It is possible with eexpchipmap
to write exposure maps in chip coordinates, which is desirable for correct production of background maps.
- eexpchipmap
accesses library routines to perform both its exposure calculations and its coordinate transforms, leading to more maintainable code and easier coodination with other tasks.
- A cubic spline interpolation of the vignetting function is employed, which is both a much quicker algorithm and one which leads to a smoother result.
XMM-Newton SOC/SSC -- 2008-07-02