calstat – Displays statistical information on a calibration table – calibration task

Description

This task returns statistical information about a column in a calibration table. The following values are computed: mean value, sum of values, sum of squared values, median, median absolute deviation, quartile, minimum, maximum, variance, standard deviation, root mean square.

Parameters

Title
Parameter	Default	Description
caltable	`''`	Name of input calibration table
axis	`'amplitude'`	Which values to use
datacolumn	`'gain'`	Which data column to use
useflags	`True`	Take flagging into account? (not implemented)
xstat	`[ ]`

Parameter Explanations

caltable

''

Name of input calibration table: Default: ‘’

Example: vis=’ggtau.1mm.amp.gcal’

axis

'amplitude'

Which data to analyze.

Default: ‘amplitude’ Options: ‘amp’, ‘amplitude’, ‘phase’, ‘real’, ‘imag’, ‘imaginary’. Also, the name of any real valued MS column can be given, e.g. TIME, POLY_COEFF_AMP, REF_ANT, ANTENNA1, FLAG, …

Note: the phase of a complex number is in radians in the range [-pi; pi].

datacolumn

'gain'

Which data column to use if axis is ‘amp’, ‘amplitude’, ‘phase’, ‘real’, ‘imag’ or ‘imaginary’.: Default: ‘gain’

useflags

True

Take flagging into account? (not implemented, this parameter has no effect!)

Default: False

If useflags=False, flagged values are included in the statistics. If useflags=True, any flagged values are not used in the statistics.

xstat

[ ]

Statistical information for the calibration table