protonscale extracts the BACKSCAL keyword and average soft proton intensity from the detector map for a specified region. These values are necessary in the spectral fitting process of multiple regions which are linked.
Warning and requirements: protonscale was part of the esas package integrated into SAS, but now it is standalone, but is ostensibly limited to work within the esas data reduction scheme. In particular, protonscale assumes that another task from the package, mosspectra, has been successfully run for the exposure to be used, but in principle it can be used on any region mask and spectrum.
