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Basic Information on calred
Purpose: Analyse flux densities of sources with poor phase stability
Categories: uv analysis, plotting
CALRED is a program used to analyse flux densities of sources
where phase stability is poor. It uses either the amplitude of
the data or an averaged triple product. Normally a point source
model is assumed, but if a planet is found in the input, CALRED
uses the model visibility for each baseline/channel to correct
CALRED produces a table with the following columns:
Sca (mJy) - the scalar average fluxdensity estimate, calculated
as the rms of the visibility amplitudes
Vec (mJy) - the vector average fluxdensity estimate,
not listed with options=triple
Tri (mJy) - the triple product fluxdensity estimate, this
is the cube root of the real part of the average of
V12*V23*conj(V13) (note that this can be negative).
Only listed with options=triple.
Con - the confusion percentage, calculated from the ratio of the
rms in the imaginary and real component of the triple ampl.
The - the theoretical noise in mJy
Act - the actual noise in mJy
NCorr - the number of correlations contributing
The input visibility datasets. Several datasets can be given.
Standard visibility selection. See help on select for more
Standard visibility linetype. See the help line for more
Normal Stokes/polaization selection. The default is to process
all parallel-hand polarisation.
Seperate estimates of the various parameters are determined for
data over an interval. This parameter gives the interval, in
minutes. The default is 5 minutes.
triple Do triple processing.
nocal Do not perform gain calibration.
nopol Do not perform polarisation calibration on the data.
nopass Do not perform bandpass calibration on the data.
norm Divide the noise estimates by the square root of the
number of points.
Revision: 1.8, 2013/08/30 01:49:21 UTC
Generated by email@example.com on 21 Jun 2016