analysis_tracking does not import params from config file

params as e.g. `theta_list` hard-coded in `Plotting/analysis_tracking.py`. Should be imported from the chosen config file

Start in Plotting/analysis_tracking.py and trace how the chosen config file is loaded and how parameters such as theta_list are currently defined. Run the script with a representative config to verify that the analysis uses that file's parameter values instead of hard-coded ones.

Written by the indexing model from the issue text.