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STATISTIC

        [DISPLAY\]STATISTIC [DataCube [FirstPlane [LastPlane]]
      [/EDGE Margin] [/NOISE VarNoise]

    Compute some basic statistics (min, max, mean, rms,...) on the specified
    DataCube  buffer  (default:  CLEAN) and planes (default: variables FIRST
    and LAST).  The current polygon or mask (see commands SUPPORT and  MASK)
    is  used to define the area on which the pixels are to be taken into ac-
    count, except when /EDGE 0 is mentionned.

    In addition to Min and Max, the command prints 3 noise numbers:
    - the rms inside the current support (whose value depends on the source
    strength and structure)
    - the rms outside of the support (a good estimate of the effective
    noise), returned in variable STAT_NOISE.
    - the theoretical thermal noise (that would be the expected noise unless
    the data is dynamic range limited, or unless the weights were
    not set properly)

    Caution: Statistics on primary-beam corrected  images  (SKY)  cannot  be
    properly computed in this way, because the noise is non uniform.


Subsections

Gildas manager 2023-06-01