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XMM­Newton CCF Release Note
XMM­CCF­REL­295
Modifications to EMOS Bad Pixel Table
M.J.S. Smith
March 1, 2013
1 CCF Components
Name of CCF VALDATE EVALDATE Blocks Changed CAL Version XSCS Flag
EMOS1 BADPIX 0036 2013­01­21T06:31:40 -- BADPIX NO
2 Changes
Following the suspected MOS1 impact event of revolution 2382, in which CCD3 sustained extensive
damage, several hot pixels developed in other MOS1 CCDs. Most a#ected of these was CCD4, with
several saturated column and row segments, while other CCDs showed individual hot pixels.
New O#set Tables and Bad Pixel Tables were uploaded to flag and veto the newly developed
hot pixels. This CCF reflects the currently uploaded MOS1 Bad Pixel Table.
3 Scientific Impact of this Update
The CCF identifies the flagged detector areas, thus allowing SAS tasks correctly to calculate the
e#ective area. Especially in extended dead areas, in the form of flagged column or row segments,
the correction to the e#ective area will be substantial.
4 Estimated Scientific Quality
The CCFs correctly reflect the current status of uploaded bright pixels.
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XMM­Newton CCF Release XMM­CCF­REL­295 Page: 2
5 Expected Updates
Depending on further development of hot, noisy or dead pixels.
6 Test Procedures and Summary of the Test Results
. Verification of content with calview;
. Testing of correct functionality with emproc (SAS 12.0.1).
Results as expected. In particular, no warnings issued of the type:
embadpixfind: warning (getCalBadpix10), Bright pixel at [...] [...]
is declared uplinked in the CCF but is present in the data.