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XMM-Newton Science Analysis System


epframes (epframes-8.116) [xmmsas_20211130_0941-20.0.0]


Discarded lines and columns

If the onboard MIP rejection is switched on (FF, eFF, LW modes), then the number of rejections of a CCD row (if row-wise MIP rejection) or CCD column (if column-wise MIP rejection, default) integrated over an exposure is stored in a DLI file for this CCD. For the faster (SW, TI, BU) modes the onboard MIP rejection is switched off and no DLI files are present in the ODF.

For all pn modes the task epframes performs a MIP rejection on the data to identify residual MIPs not rejected onboard. The number of rejected columns/rows found in the ODF and by the SAS are stored in an extension DLIMAP with columns DLIODF and DLISAS, respectively, for subsequent analysis in later tasks in the pn processing chain.



XMM-Newton SOC -- 2021-11-30