The user can also apply selection criteria to the data itself, as well as the HK or auxiliary filter files, to filter the data. There are two provisions for selections based on data:
a) To apply a general selection expression based on the columns in the event files, use the command
xsel > select event
This command produces a set of reduced events files, one for each input file, which are stored in the workspace. To save these files, use
xsel > save select
To aid in building up these expressions, the command
xsel > show params event
will display the column names in the event list files. You can also use the command
xsel > show event
to look at the event data itself.
b) To apply a selection based on the columns of the auxiliary filter files, use the command
xsel > select mkf
To see the columns available in the auxiliary files, use the command
xsel > show parameters mkf
To gain insight into the behavior of these parameters, use the commands
xsel > mkfbin
xsel > plot mkf
The first will bin up a user supplied list of the mkf parameters. The second will plot up these binned curves. They can be plotted either against time, or against each other. If an event lightcurve has been extracted then this can also be plotted with the mkf parameters to look for correlations between the event rate and other information.
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Last modified: Tuesday, 10-Jan-2023 11:03:00 EST
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