params.json Config file documentation

Full documentation of the params.json configuration file

Simulator_params: Simulation parameters

working_directory: Path where results will be saved format: str e.g: "/scratch/users/thatomanamela/Results/testing/"

trecs_params_file: simuCLASS congfig file being used format: str e.g: "stackingdepth2.ini"

msfile_name: Simulated measurement set name format: str e.g: "MeerKAT_3GHz_TRECS_srcs_RA0deg_Dec-30deg.MS"

ra_deg0: Right Ascension at the phase centre of the observation in units of degrees format: float
e.g: 0

dec_deg0: Declination at the phase centre of the observation in units of degrees format: float e.g: 30

obs_length_hr: Observation length in hours format: int e.g: 1

nchan: Number of channels format: int e.g: 16

dtime_s: Intergration time in seconds format: int e.g: 8

freq0_MHz: Observational frequency format: str e.g "3000MHz"

dfreq_MHz: "0.209MHz" integration frequency SEFD_Jy: 450 the system equivalent flux densit in Jy }

Stacking_params:{ parameters when stacking a certain number of sources to avoid confusion stacking_depth?: false should be kept false when No._of_srcs_of_choice? is true res_element_per_source: 100 the number of resolution elements per source im_noise_Jy: 3e-6 MeerKAT's Full image noise stacking_depth_skymodel_name: "stack_auto/trecs-simu_truthcat.txt" FOV_size_cut?: false
FOV_size_sqdeg: 0.84 MeerKAT's FOV size in sq-deg FOV_size_cut_value: 0.5 sources will be generated within 50% of the FOV if FOV_size_cut? is true No._of_srcs_of_choice?: true when resolutions elements per source is not prefered No._of_srcs: 10 flux density of choices provided No._of_srcs_of_choice? is true flux_density_Jy: 1e-6 flux density of choices provided No._of_srcs_of_choice? is true src_size_arcsec: 0 when 0 TRECS source sizes are used }

Imaging_params:{ Imaging parameters when removing bright sources before stacking stack_msfile_name: "uvstacked.ms" name of the visibility stacked measurement set imagename: "fullimage" name the full image of the observation simulation when removing bright sources niter: 1000 CLEAN number of interations threshold: "0.01mJy" maximum flux density to CLEANout imsize: 3136 size of the full image stampsize: 64 size of uv stacked image cell: "1arcsec" pixel size stack_clean?: true True for removing bright sources weighting: "briggs" CLEAN weighting robust: -0.5 weighting robust parameters