pn-spectra processes the cleaned event file output from pn-filter to produce intermediate files for the creation of model particle background spectra and images by the task pn_back.
Warning and requirements: pn-spectra is part of the package esas, integrated into SAS, but (still) limited to work within esas' data reduction scheme. This is specially true wrt input files structure and names. In particular, pn-spectra assumes that other tasks from the package, pn-filter for filtering and cheese in mode=2 for point source exclusion have been successfully run for the exposures to be used.
