XMM-Newton Science Analysis System


eslewchain (eslewchain-1.7.1) [xmmsas_20160201_1833-15.0.0]

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Interpreting the results

Slew data is particularly susceptible to problems caused by background flares, low-energy noise and halos around bright sources. For a practical guide of the issues to be aware of when interpreting slew data please see Saxton et al. 2008, A&A 480, 611.

A diagnostic file, I"rev"_"obsid"_"ra"_"dec"_wartsnall.ds is produced for each sub image position. This is an unfiltered image, containing events with all energies, all patterns and all flags. In this image, problems due to low-energy noise and optical loading can readily be seen. It is worth checking this image for problems before interpreting interesting features in the scientific images.