/so/stix/idl/sim/subc/stx_sim_det_pix.pro
/so/stix/idl/sim/subc/stx_sim_flare.pro
/so/stix/idl/sim/subc/stx_sim_grid_tran.pro
/so/stix/idl/sim/subc/stx_sim_periodic_tran.pro
/so/stix/idl/sim/subc/stx_sim_photon_path.pro