Attempt to optimise the ghost_killer_threshold
Currently by default in the hlt1_pp_forward_then_matching_tuning sequence ghost_killer_threshold=0.8 but we can try setting it to 1 and then optimising the value in the BW division fit.
Currently by default in the hlt1_pp_forward_then_matching_tuning sequence ghost_killer_threshold=0.8 but we can try setting it to 1 and then optimising the value in the BW division fit.