Before reviewing the details here, I think this is a good opportunity to move all of the post-processing stuff you have in the OpenMC script to the comparison script. Rather than processing it there and saving as CSV to be imported here, just process it here from the statepoint files.

In doing so, make a function that handles the OpenMC processing and a function that handles the ALARA processing. You can then PR them one at a time, or even in smaller pieces.