Документ взят из кэша поисковой машины. Адрес оригинального документа : http://xmm.vilspa.esa.es/sas/7.0.0/doc/epexposure/node10.html
Дата изменения: Thu Jun 29 01:18:02 2006
Дата индексирования: Sat Dec 22 12:34:53 2007
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Поисковые слова: reflection nebula

XMM-Newton Science Analysis System


epexposure (epexposure-0.6.2) [xmmsas_20060628_1801-7.0.0]

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Quadrant specific frame quality dependent livetime

If there is a difference between the NEPDH counter (see Table 1), giving info on the number of events which have been transmitted from the Event Analyser [EPEA] to the Data Handling Unit [EPDH]) and the number of raw events in the corresponding time interval in all active CCDs for this quadrant then the interval associated with these raw events has to be considered as bad (handled via GTI creation) Both frame counters have to be computed over the time interval of $m$ CYCLEs from the quadrant under consideration.