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XMM­Newton CCF Release Note
XMM­CCF­REL­276
EPIC PN Bad Pixels
M.J.S. Smith
September 16, 2011
1 CCF Components
Name of CCF VALDATE EVALDATE Blocks CAL XSCS Flag
Changed Version
EPN BADPIX 0142.CCF 2011­08­17T18:41:06 BADPIX NO
EPN BADPIX 0143.CCF 2011­09­02T17:40:12 BADPIX NO
2 Changes
Two recently developed bad pixels in CCD 5 were included in the on­board bad pixel table (BPT):
pixels (13,26) and (13,25) were masked from revolutions 2141 and 2149 onwards, respectively. The
changes in the BPT are reflected in these CCFs.
3 Scientific Impact of this Update
The CCFs correctly reflect the on­board BPT.
4 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 XMM­CCF­REL­276 Page: 2
5 Test Procedures and Summary of the Test Results
Correct bad pixel contents confirmed with calview. Correct functionality and validity dates tested
with epproc (SAS 11.0).