Importing fitsidi data

Import fitsidi data to CASA measurement set (import_fitsidi)

This step will convert the fitsidi files into a measurement set ready to begin calibration. A listobs file summarising the data (format <project_code>.listobs.txt) will also be produced. Check that this file shows all of the data you'd expect to be there.

Parameters

    "import_fitsidi":{
        "const_obs_id"      :  true, #Sets all scans to be part of a single observation
        "scan_gap"          :  15.0, #If the gap between two parts of data is longer than this, set as new scan (in seconds)
        "remove_idi"        :  true, #Delete the fitsidi files in the cwd once the measurement set is made
        "make_backup"       :  true, #Backup the measurement set (makes `<project_code>_backup.tar.gz`)
        "hpc_options":{
            "partition"     :  "default",
            "walltime"      :  "default",
            "nodes"         :    -1,
            "cpus"          :    -1,
            "mpiprocs"      :    -1,
            "nodetype"      :  "default"
        }

Recommended use: The default parameters shown here are normally ok for 99% of observations. Check the listobs file to ensure the data is what you expect. If you have the disk space, it is useful to keep "make_backup":true as it'll allow you to restart from when the measurement set was made.

If step prepare_data has not been run before, as for VLBA data, the fitsidifiles will be copied from the directory set by fitsidi_path to the current working directory (cwd) before being converted into a measurement set. Do not worry about keeping "remove_idi":true as this will only remove the fitsidi files in the cwd.

Expected inputs

• Fitsidifiles

Expected outputs

• Measurement set (format <project_code>.ms)