Документ взят из кэша поисковой машины. Адрес оригинального документа : http://xmm.vilspa.esa.es/sas/7.0.0/watchout/6.5/PN_less_events.shtml
Дата изменения: Unknown
Дата индексирования: Sat Dec 22 14:24:50 2007
Кодировка:
XMM-Newton SAS: Watchout Page RGS spectrum of HR1099
Home Watchouts Software requirements Installation Download Documentation Calibration Help

Quadrant in PN with fewer events than expected?

It has been found by several PN exposures that the event list corresponding to a certain quadrant (3 contiguous CCDs) is truncated. This makes one (or more) quadrant(s) to appear fainter even in exposure corrrected images. The problem seems to be in the communication between the observation access layer and one of the PN reduction tasks. It has been found that it was present only for some of the SAS versions in the past. SAS 6.5 is definitively affected.

While the problem is investigated and solved, we would like to warn the XMM-Newton observers. It follows a complete list of the affected exposures up to revolution 1051:

0055_0122310201_PNS003
0060_0113891001_PNS001
0065_0123110201_PNS001
0066_0123310101_PNS001
0076_0123910101_PNS008
0078_0124100101_PNS003
0081_0123701001_PNS003
0092_0126500101_PNS006
0096_0006810201_PNS003
0097_0114120101_PNS010
0101_0098010101_PNU002
0118_0112370101_PNS001
0120_0112370301_PNS001
0121_0102640301_PNS001
0129_0109930101_PNU002
0130_0109060201_PNS004
0131_0112380101_PNS003
0135_0101440901_PNS003
0138_0101440601_PNU002
0140_0112290101_PNU002
0146_0114100101_PNS003
0147_0114100301_PNS003
0162_0128530301_PNS001
0163_0100640101_PNS001
0167_0041170201_PNS006
0176_0109950201_PNS005
0182_0108670101_PNS003
0185_0133120101_PNS003
0187_0111150101_PNS003
0188_0111150201_PNS003
0192_0101040101_PNS003
0206_0060740101_PNS003
0291_0060370201_PNS003
0432_0110660901_PNU002
0432_0009221401_PNS003
0493_0110012601_PNS005
0515_0089370701_PNS003
0610_0150390301_PNS003
0623_0140550601_PNS003
0625_0141170101_PNS003
0656_0141570101_PNU002
0656_0153450101_PNU002
0812_0205470301_PNS003
1051_0134921101_PNS026

Pages maintained by SAS librarian.
Any question about SAS should be addressed to the XMM-Newton help desk.
Updated on: 7-DEC-2005