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XMM­Newton CCF Release Note
XMM­CCF­REL­61
EPIC Bad Pixels
D Lumb
February 6, 2001
1 Changes
2 Scientific Impact of this Update
Necessary to track changes in bad pixel settings. There was a database update in June, to cover
the new list of bad pixel locations found during the CAL/PV phase of operations, and thus to be
uplinked at the start of each observation. However this was not reflected in the the procedures for
the start of unscheduled exposures, for example due to commanding losses, timeline interruptions
etc.. In such cases the old bad pixel tables were used. The listings of such exposures have been
collated and the different CCF versions propogated to account for an appropriate validity date.
Note that from the database update that occurred at Rev 171­192, the CAL CLOSED exposures
actually have an offset of 50 applied to CCD11 Column64 which is not consistent with the CCF. This
is left in as we have no tracking mechanism at this level of detail, and science analysis of CLOSED
CAL data will not be materially affected.
3 Estimated Scientific Quality
Note that in all the EPIC cameras there are intermittent bad pixels that may arise in only one
exposure. The user is recommended to run the bad pixel finding algorithm, and remove after
processing.
1

XMM­Newton CCF Release XMM­CCF­REL­61 Page: 2
4 CCF components
Name of CCF VALDATE List of Blocks
changed
CAL VERSION XSCS flag
EPN BADPIX 0021 2000­06­11T03:00:00 BADPIX YES (post facto)
EPN BADPIX 0022 2000­06­29T02:49:00 BADPIX YES (post facto)
EPN BADPIX 0023 2000­07­03T12:00:00 BADPIX YES (post facto)
EPN BADPIX 0024 2000­07­03T22:16:00 BADPIX YES (post facto)
EPN BADPIX 0025 2000­07­05T15:00:00 BADPIX YES (post facto)
EPN BADPIX 0026 2000­07­05T22:30:00 BADPIX YES (post facto)
EPN BADPIX 0027 2000­07­07T15:54:00 BADPIX YES (post facto)
EPN BADPIX 0028 2000­07­08T11:50:00 BADPIX YES (post facto)
EPN BADPIX 0029 2000­07­10T03:16:00 BADPIX YES (post facto)
EPN BADPIX 0030 2000­07­10T17:00:00 BADPIX YES (post facto)
EPN BADPIX 0031 2000­07­13T21:37:00 BADPIX YES (post facto)
EPN BADPIX 0032 2000­07­26T04:48:00 BADPIX YES (post facto)
EPN BADPIX 0033 2000­07­28T04:32:00 BADPIX YES (post facto)
EPN BADPIX 0034 2000­07­29T00:59:00 BADPIX YES (post facto)
EPN BADPIX 0035 2000­08­02T00:22:00 BADPIX YES (post facto)
EPN BADPIX 0036 2000­08­02T20:19:00 BADPIX YES (post facto)
EPN BADPIX 0037 2000­08­04T11:42:00 BADPIX YES (post facto)
EPN BADPIX 0038 2000­08­04T20:11:00 BADPIX YES (post facto)
EPN BADPIX 0039 2000­08­07T00:58:00 BADPIX YES (post facto)
EPN BADPIX 0040 2000­08­10T10:00:00 BADPIX YES (post facto)
EPN BADPIX 0041 2000­10­21T00:00:00 BADPIX YES (post facto)
EPN BADPIX 0042 2000­10­25T15:47:00 BADPIX YES (post facto)
EPN BADPIX 0043 2000­10­31T23:00:00 BADPIX YES (post facto)
EPN BADPIX 0044 2000­11­03T21:38:00 BADPIX YES (post facto)
EPN BADPIX 0045 2000­11­05T16:00:00 BADPIX YES (post facto)
EPN BADPIX 0046 2000­11­05T21:31:00 BADPIX YES (post facto)
EPN BADPIX 0047 2000­11­07T16:00:00 BADPIX YES (post facto)
EPN BADPIX 0048 2000­11­07T21:22:00 BADPIX YES (post facto)
EPN BADPIX 0049 2000­12­25T13:00:00 BADPIX YES (post facto)