script spectrum.py makes fourier-transform in cartesian than transforms the result in spherical coordinate system and integrate over 100 bins script BHNS-trajectory produces plots of separation between BH and NS and other small features script DensMagMagEn creates a plot where density slice, MF slice and total magnetic energy are depicted simultaneously join_files connects all MatterObservers and ApparentHorizon files in one ignoring directories without Run/ sub-directory. It works fast# useful_SpEC