Band-Specific Guidelines

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The general approach for EVLA data processing will be similar regardless of band, and will consist of (for continuum observations):

  • Flagging of any obvious bad data (flagdata, plotms, viewer)
  • Fixing the flux and spatial distribution of the flux density calibrator (setjy)
  • Performing a bandpass calibration (gaincal for initial phase, bandpass)
  • Performing gain calibration on calibration sources (gaincal)
  • Setting the flux density scale (fluxscale)
  • Transferring the gain calibration to the science target (applycal)
  • Imaging (clean)

Of course, there are many variations on this theme: at some point, the data could be averaged (in frequency and/or time) to reduce its size; this, of course, would depend on the tolerance for bandpass smearing, and ... Furthermore, one may wish to perform [[Self_Calibration]self-calibration] if the science target is sufficiently strong.