Cleaning: read_results, why do you use DataFrame if you don't?
There: https://gitlab.aip.de/lketzer/platypos/-/blob/master/platypos_package/Planet_class_LoFo14.py#L297
Using DataFrame just for reading is a bit under utilizing the potential of pandas. There are plenty of other modules that can read .csv files without creating the entire structure of a DataFrame behind it.
So I would suggest either to use the DataFrame further in the program of to use a simpler library to read the .cvs file.
But using the DataFrame will provide you great features in the rest of the program. read_results could just return df.