[ Basic Info | User Guide ]

Basic Information on psrbl

Task: psrbl
Purpose: Subtract off-pulse uv baseline
Categories: uv analysis

        PSRBL subtracts the off-pulse bins (the baseline) of visibilities
        from the on-pulse bins of the visibilities, to remove continuum
        Note: Although PSRBL does an excellent job of removing continuum
        sources, it has the side-effect of scattering noise OUT OF the
        off-pulse bins and INTO the on-pulse bins. For weak sources,
        this can make plots made with PSRPLT, mode=amplitude look
        artifically significant (or just plain strange). To moderate
        this effect, always set the binsl key to cover all the available
        off-pulse bins.

Key: vis
        The name of the input uv data sets. Several can be given. No default.

Key: select
        The normal uv selection commands. The default is copy everything.
        See the help on select for more information.

Key: binsl
        Bin selection to use for the baseline. This should consist
        of comma-separated start/stop pairs, eg.
          binsl = 1,14,17,32
        In this example, the pulsar is detected in bins 15 and 16,
        so all other bins (1-14 and 17-32) are used for the baseline.
        To select a single bin, use eg. 1,1

Key: out
        The name of the output uv data set. No default.

Key: options
        Extra processing options. Several can be given, separated by
        commas. Minimum match is supported.
          nocal   This option suppresses antenna gain calibration. The
                  default behaviour is to apply antenna calibration.
          nopol   This option suppresses polarisation calibration. The
                  default behaviour is to apply polarisation calibration.
          nopass  This option suppresses bandpass calibration. The
                  default behaviour is to apply bandpass calibration.

Generated by miriad@atnf.csiro.au on 02 Jun 2021