CASA Parameter Dictionary

Parameter Description Comments
alg Imaging algorithm to use Options: 'clark','hogbom','csclean','multiscale','mfclark','mfhogbom','mfmultiscale'
  Used in: clean, mosaic
bandname VLA frequency band Options: '4','P','L','C','X','U','K','Q'
  Used in: importarchive
bptable Bandpass calibration solutions table  
  Used in: correct
caltable Output calibration table  
  Used in: bandpass, fluxscale, gaincal
channels Range of channels to fit  
  Used in: contsub
cell Cell size [x,y] Units=arcsec
  Used in: clean, mosaic
constpb In Sault weighting, the flux scale is constant above this value  
  Used in: mosaic
correlations Correlations Options: 'RR','LL','RR LL','XX','YY','XX YY'
  Used in: plotxy
datacolumn Which data set column to use Options: 'DATA'(raw),'MODEL_DATA','CORRECTED_DATA'
  Used in: plotxy, split
fieldid Field index identifier 0-based
  Used in:
fitmode Use of the continuum fit model Options: 'subtract','replace','model'
  Used in: contsub
fitorder Polynomial order for fit  
  Used in: contsub
fitsfile Name of input UV FITS file  
  Used in: importuvfits
fluxdensity Specified flux density [I,Q,U,V] in Jy  
  Used in: setjy
fluxtable Name of output, flux-scaled calibration table  
  Used in: fluxscale
freqtolerance Tolerance in frequency shift in naming spectral windows  
  Used in: importarchive
gain Loop gain for CLEANing  
  Used in: clean, invert, mosaic
gaincurve Apply VLA antenna gain curve correction True or False
  Used in: bandpass, correct, gaincal
gainselect Select subset of calibration solutions from gaintable  
  Used in: bandpass, correct
gaintable Gain calibration solutions table
  Used in: bandpass, correct
highres Name of high resolution (interferometer) image  
  Used in: feather
imagename Name of output image(s) For clean and mosaic, this will be appended with .residual, .model and .image
  Used in: clean, feather, mosaic
imsize Image size in spatial pixels (x,y)  
  Used in: clean, mosaic
lowres Name of low resolution (single dish) image  
  Used in: feather
mask Name(s) of mask image(s) used for CLEANing  
  Used in:
minpb Minimum primary beam level to use  
  Used in: mosaic
mode Type of data selection Options: 'none','channel','velocity'
  Used in: bandpass, clean, contsub, gaincal, invert, mosaic
msselect Optional subset of the data to select (field, spw,time,etc) See: http://aips2.nrao.edu/docs/notes/199/199.html
  Used in: bandpass, correct, gaincal
niter Number of iterations Set to 0 for no CLEANing
  Used in: clean, mosaic
nchan Number of channels to select Used when mode = 'channel'
  Used in: bandpass, clean, gaincal, invert, mosaic, split
opacity Apply opacity correction True or False
  Used in: bandpass, correct, gaincal
outputvis Name of output visibility file (MS)  
  Used in: split
refant Reference antenna  
  Used in: bandpass, gaincal
reference Reference field name (transfer flux from)
  Used in: fluxscale
rmode Robustness mode Used for weighting = 'briggs'
  Used in:
robust Brigg's robustness parameter Options: -2.0 (close to uniform) to 2.0 (close to natural)
  Used in:
scaletype Image plane flux scale type Options: 'SAULT','NONE'
  Used in: mosaic
solint Solution interval (sec)  
  Used in: bandpass, contsub, gaincal
spwid Spectral window index identifier 0-based
  Used in: **
standard Flux density standard Options: 'Baars','Perley 90','Perley-Taylor 95','Perley-Taylor 99'
  Used in: setjy
start Start channel (0-relative), velocity Used when mode = 'channel','velocity'
  Used in: bandpass, clean, gaincal, invert, mosaic, split
step Increment between channels Used when mode = 'channel','velocity'
  Used in: bandpass, clean, gaincal, invert, mosaic, split
stokes Stokes parameters to image Options: 'I','IV','IQU','IQUV'
  Used in: clean, mosaic
subplot Plot option for multi-panel ploArEtting subplot=yxn, where y=number of y panels, x=number of x panels, n=panel number for the current display starting at the top left
  Used in: plotants, plotxy
tau Opacity value to apply if opacity = True
  Used in: bandpass, correct, gaincal
threshold Flux level at which to stop CLEANing Units=mJy
  Used in: clean, mosaic
timebin Value for time averaging '-1s' indicates no averaging
  Used in: split
timerange Select time range for subset of data timerange='YYY/MM/DD/HH:MM:SS.sss'
timerange='< YYYY/MM/DD/HH:MM:SS.sss'
timerange='> YYYY/MM/DD/HH:MM:SS.sss'
timerange='ddd/HH:MM:SS.sss'
timerange='< ddd/HH:MM:SS.sss'
timerange='> ddd/HH:MM:SS.sss'
  Used in: split
transfer Transfer field name(s)  
  Used in: fluxscale
verbose List each observation in addition to summary True or False
  Used in: listobs
vis Input visibility file CASA MeasurementSet on disk
  Used in: bandpass, clean, contsub, correct, flagautocorr, fluxscale, gaincal, importarchive, importasdm, importuvfits, invert, listhistory, listobs, mosaic, plotants, plotxy, setjy, split
weighting Weighting to apply to visibilities Options: 'natural','uniform','briggs','radial',superuniform'
  Used in:
width Channel width (value > 1 indicates channel averaging)
  Used by:
xaxis Quantity to plot on the xaxis Options: 'azimuth','baseline','channel','elevation','hourangle','parallacticangle','time','u','uvdist'
  Used in: plotxy
yaxis Quantity to plot on the y-axis Options: 'amp','phase'
  Used in: plotxy

-- JosephMcMullin - 21 Sep 2006

This topic: Software > WebHome > LegacyCASA > ParameterDictionary
Topic revision: 2013-02-13, PatrickMurphy
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