importvla – Import VLA archive file(s) to a measurement set – import/export task

Description

Imports an arbitrary number of VLA archive-format data sets into a casa measurement set. If more than one band is present, they will be put in the same measurement set but in a separate spectral window. The task will handle old style and new style VLA (after July 2007) archive data and apply the tsys to the data and to the weights.

Parameters

Title
Parameter	Default	Description
archivefiles	`numpy.array( [ ] )`
vis	`''`
bandname	`''`
frequencytol	`{'value': float(150000.0), 'unit': 'Hz'}`
project	`''`
starttime	`''`
stoptime	`''`
applytsys	`True`
autocorr	`False`
antnamescheme	`'new'`
keepblanks	`False`
evlabands	`False`

Parameter Explanations

archivefiles

numpy.array( [ ] )

Name of input VLA archive file(s)

vis

''

Name of output visibility file

bandname

''

VLA frequency band name:''=>obtain all bands in the archive file

frequencytol

{'value': float(150000.0), 'unit': 'Hz'}

Frequency shift to define a unique spectra window (Hz)

project

''

Project name: '' => all projects in files

starttime

''

start time to search for data

stoptime

''

end time to search for data

applytsys

True

apply nominal sensistivity scaling to data and weights

autocorr

False

import autocorrelations to ms, if set to True

antnamescheme

'new'

'old' or 'new'; 'VA04' or '04' for VLA ant 4

keepblanks

False

Fill scans with blank (empty) source names (e.g. tipping scans)

evlabands

False

Use updated eVLA frequencies and bandwidths for bands and wavelengths