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XMM-Newton Science Analysis System


tabgtigen (tabgtigen-2.12.3) [xmmsas_20060628_1801-7.0.0]

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Parameters

This section documents the parameters recognized by this task (if any).

Parameter	Mand	Type	Default	Constraints
table	yes	name of existing table		input table specifier
a table specifier which must point to a table in a data set. It must be in either of the three forms setname, setname+tableid or setname[tableid] where setname must be the name of an existing data set and tableid an identifier of a table in that data set. If the first form, setname, is used, the table data are sought in the first block of the named data set. tableid can either be an identifier starting with a letter which must then be the name of a table in the specified data set or a simple number which is directly interpreted as a block sequence number (starting from 1).
expression	yes	string		valid boolean expression according to above syntax rules
the boolean expression controlling the creation of the GTI file
gtiset	no	table specifier	gti.ds:ALLGTI	none
The name of the resulting output GTI table - can be the name of an already existing table (which will get overwritten) or the name of a new one in an existing or new data set.
timecolumn	no	string	TIME	name of existing column
name of the column in the input data set containing the time stamps
prefraction	no	real	0.5	-1.0-1.0
the fraction of the previous time interval to be included in the current GTI. A value of 1.0 means to include the whole interval. The default is to take half of the time interval as if the state change occurred between the sample instants. Please note: For the adjustment of the very START time there is no previous time interval to consider - the subsequent one is taken instead.
postfraction	no	real	0.5	-1.0-1.0
the fraction of the subsequent time interval to be included in the current GTI. A value of 1.0 means to include the whole interval. The default is to take half of the time interval as if the state change occurred between the sample instants. Please note: For the adjustment of the last STOP time there is no following time interval to consider - the previous one is taken instead.
mingtisize	no	real		$>=0$
The output GTI table shall not contain GTIs with durations less than this limit. Its value shall be echoed in attribute MINGTISZ together with a new attribute SUMSHORT (the sum of all GTIs shorter than mingtisize).
Parameter	Mand	Type	Default	Constraints