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qstatistics noao.imred.quadred


NAME · USAGE · PARAMETERS · DESCRIPTION · EXAMPLES · SEE_ALSO

NAME

qstatistics -- Compute and print statistics for multi-amp data

USAGE

qstatistics images

PARAMETERS

images
List of image names in quadformat .
window = "datasec" (datasec|trimsec|biassec)
Type of section to output. The choices are "datasec" for the amplifier section which includes the bias if any is present, "trimsec" for the trim section, and "biassec" for the bias section.

The remaining parameters come from the imstatistics task.

DESCRIPTION

This script tasks uses the quadsections task to break the quadformat data into separate sections and runs the imstatistics task on the sections.

EXAMPLES

1. To compute the mean and stddev of the data section.

    qu> qstat quad0072 fields=image,mean,stddev
    #               IMAGE      MEAN    STDDEV
     quad0072[1:1034,1:1024]     5537.     2647.
     quad0072[1163:2196,1:1024]     6210.     5439.
     quad0072[1:1034,1025:2048]     5364.     2535.
     quad0072[1163:2196,1025:2048]     5862.     1327.

2. To compute the mean and stdev of the bias section.

    qu> qstat quad0072 fields=image,mean,stddev window=biassec
    #               IMAGE      MEAN    STDDEV
     quad0072[1045:1098,1:1024]      713.     1.272
     quad0072[1099:1152,1:1024]     516.2     1.425
     quad0072[1045:1098,1025:2048]     554.3     1.347
     quad0072[1099:1152,1025:2048]     530.3     1.377

SEE ALSO

quadformat, quadsections, imstatistics


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