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: http://xmm.vilspa.esa.es/sas/7.1.0/doc/epchain/node11.html
Дата изменения: Mon Nov 26 17:08:48 2007 Дата индексирования: Sat Dec 22 09:46:45 2007 Кодировка: Поисковые слова: massive stars |
Let us assume we have an observation 0084_0099280101 with three exposures, one TIMING mode exposure PNS008, and two imaging exposures PNS010 (in Small Window Mode) and PNS018 (in Full Frame Mode). Here follow some typical calls to epchain:
epchainThis processes the first IMAGING mode exposure (i.e. PNS010) and is equivalent to one of the calls
epchain datamode=IMAGING odfaccess=odf exposure=010 schedule=S epchain datamode=IMAGING odfaccess=oal exposure=1 epchain datamode=IMAGING exposure=1 epchain odfaccess=name odf=0084\_0099280101\_PNS01000AUX.FITIf you are interested in the second IMAGING exposure then you may enter
epchain exposure=2or (if you like it more verbose) any one of these:
epchain datamode=IMAGING odfaccess=odf exposure=018 schedule=S epchain datamode=IMAGING odfaccess=oal exposure=2 epchain odfaccess=name odf=0084_0099280101_PNS01800AUX.FITFinally, the TIMING mode exposure (if existent) is processed via any of the calls
epchain datamode=TIMING epchain datamode=TIMING exposure=1 epchain datamode=TIMING odfaccess=oal exposure=1 epchain datamode=TIMING odfaccess=odf exposure=008 epchain datamode=TIMING odfaccess=odf exposure=008 schedule=Y epchain odfaccess=name odf=0084_0099280101_PNS00800AUX.FITThe commands
epchain odfaccess=all epchain datamode=IMAGING odfaccess=allwill process all IMAGING mode exposures in the selected ODF in one call to epchain. All TIMING mode or BURST mode exposures (if available) may be selected accordingly. The call
epchain datamode=ALL odfaccess=allwill process all exposures of an ODF, independent of observing mode. Sometimes one is interested just in particular (e.g. central) CCDs:
epchain ccds=1,4,7,10 exposure=2 ...or one does not want to search for bad pixels (e.g. for short exposures) and no background lightcurve:
epchain runbadpix=N getnewbadpix=N runbackground=N ...To create the output filenames according to the ODF (i.e. P0099280101PNS010*.FIT) use the parameter switch (this is the default in the meanwhile)
epchain usecanonicalnames=Y ...Finally, the next example shows how to create a ``normal'' events file and an ``out-of-time'' events file by re-using intermediate files:
epchain runbackground=N keepintermediate=raw withoutoftime=Y epchain runatthkgen=N runepframes=N runbadpixfind=N runbadpix=N
Some special settings that may be useful for particular observations:
If you have a very soft source and you want to have also the very softest
photons to be included in the final event list (e.g. lower threshold 100eV
instead of 150eV) then (be prepared for a very large event file):
epchain screenlowthresh=0 ... # default: 150If you have an offset pointing in TIMING or BURST mode (either intentionally or because the sky position of the source was not accurately known at the time of the scheduling e.g. for an ``Target of Opportunity'') then the correct source position can be entered via parameters (see also Sect.6) to ensure correct timing and CTI corrections:
epchain ... withsrcccords=Y srcra=83.633208 srcdec=22.0124194If you are interested in diagnostic images and plots and the EPEA rejection setup
epchain ... witheventmap=Y withphotonmap=Y withpatplot=Y showpah=YXMM-Newton SOC/SSC -- 2007-11-26