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: http://xmm.vilspa.esa.es/sas/7.0.0/watchout/5.3/rgs_backward.shtml
Дата изменения: Unknown Дата индексирования: Sat Dec 22 14:12:58 2007 Кодировка: Поисковые слова: ngc 5128 |
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Due to a change of the structure of the RGS event lists and RGS source list files since SAS 5.1, it is necessary to convert products that where generated with SAS 5.0 to the format required by SAS 5.1 tasks, mainly rgsrmfgen. You can find out, if your event lists need to be updated by inquiring the spectrum product with the following command:
playback withscriptfile=n sets=PppppppppppRiSeeeSRSPEC1003.FIT \
|& grep rgsspectrum
The output contains a string like [xmmsas_yyyymmdd_tttt], which is an encoding of the date of the SAS. If that date is before 20010411, then updating of the data files is needed.
The recipe below lists the steps to be taken for one exposure of one instrument. It needs to be repeated per instrument. Note that in the following:
The following steps need to be taken:
Step 4. in the above recipe is due to the fact that rgsregion cannot overwrite extensions of a source list file.
After this rgsrmfgen can be started in the usual way, e.g. by:
rgsrmfgen ebins=13000 emax=2.3 emin=0.3 file=r1o1.rmf order=1 \
set=PppppppppppRiSeeeEVENLI0000.FIT \
source=3 sourceset=PppppppppppRiSeeeSRCLI_0000.FIT \
spectrumset=PppppppppppRiSeeeSPEC1003.FIT withspectrum=yes
The value of the parameter ebins in rgsrmfgen
has a significant impact on the computation time. Although the
default specified above is the optimal choice, smaller values
(>~ 3000) may be accurate enough for most scientific purposes
or testing.