Name of the EPIC (combined) source list set Event list filename of the EPIC imaging observation EPIC Image set in a reference energy band EPIC Exposure map corresponding to image Name of the file containing the temporary flatfielded image Name of the temporary file containing the background regions Name of the temporary file used by region during filtering of source list Name of the file containing the temporary positive image mask Name of the file containing the temporary negative image mask Name of the file containing a temporary positive spectrum Name of the file containing a temporary negative spectrum Size of the rebinned pixels in degrees to define positive and negative regions. It will be rounded to the nearest integer multiple of the pixel size in the input image binsize .gt. 0.0 Output fits filenames containing the spectra of the background fluctuations extracted in equal-area annular regions at different offaxis values (between 0. and 12 arcmin).