Reset the files used for background correction.
XSPEC> corfile [<filespec>...]
where <filespec> is the same as for the backgrnd command. The correction
file can be associated with a data set to further adjust the count rates. It
is a PHA file whose count rate is multiplied by the current associated
correction norm (see the çornorm and recornrm command) and then subtracted
from the input uncorrected data. The correction norm is not changed by running
the corfile command. Default values for the correction file and norm are
included in the data PHA file. Unlike the background file, the correction data
does NOT contribute to the measurement error.
A file name of none is equivalent to no correction file used. If an input file can not be opened or found, an error message is printed and the user prompted for a replacement. As with the backgrnd command, the correction file is checked against the associated data set for number of channels, grouping status, and detector ID.
The current ignore status for channels is not affected by the çorfile command. Note that correction files have the same format (SF type XSPEC data) as the PHA files used by the data command. (See the Implementation note for the data command for default directory and extension information).