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XMM­Newton CCF Release Note
XMM­CCF­REL­66
EPIC MOS Bad Pixels
D Lumb and B Altieri
June 1, 2001
1 CCF components
Name of CCF VALDATE List of Blocks
changed
CAL VERSION XSCS flag
EMOS1 BADPIX 0009 1999­12­10T06:30:00 BADPIX NO
EMOS2 BADPIX 0009 1999­12­10T06:30:00 BADPIX NO
EMOS1 BADPIX 0010 2000­05­12T06:30:00 BADPIX NO
EMOS2 BADPIX 0010 2000­05­12T06:30:00 BADPIX NO
EMOS1 BADPIX 0011 2000­07­10T21:00:00 BADPIX NO
EMOS2 BADPIX 0011 2000­07­10T21:00:00 BADPIX NO
2 Changes
VERSION 9 has the on­board bad pixel tables of the launch version replicating the actual database.
To avoid confusion with usage of the SAS pipelines, not­uplinked locations have been removed.
Version 10 includes a similar exercise for the first update to the on­board tables which corrected
some errors in the launch version
Version 11 includes new hot pixels which subsequently developed. These are mostly in MOS 2
and occurred between revolutions 107 and 108. These were not yet uploaded so are flagged as such,
especially because there extent causes dead areas of 3\Theta3 or 3\Theta4 pixels. The user can account for
these in the pipeline processing with the parameter getotherbadpix = Y
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XMM­Newton CCF Release XMM­CCF­REL­66 Page: 2
3 Scientific Impact of this Update
Should correctly interpret what was uplinked to on­board bad pixels list.
4 Estimated Scientific Quality
There are still about 2 pixels in MOS 1 and 10 in MOS 2 above 1% recurrence frequency. The user
needs to runwithbadpixfind = Y and getnewbadpix = Y in order to find these in his/her data set.
5 Expected Updates
Whenever there is a new release of badpixels for on­board the CCF file will be updated. Not­
uplinked bad pixels which are found to be stable and should be placed in the file will be added as
necessary