|
|
(2 intermediate revisions by one other user not shown) |
Line 1: |
Line 1: |
| == Help on fluxscale task: ==
| | {{fluxscale}} |
| | |
| <pre>
| |
| Bootstrap the flux density scale from standard calibrators
| |
| | |
| After running gaincal on standard flux density calibrators (with or
| |
| without a model), and other calibrators with unknown flux densities,
| |
| fluxscale will determine the flux density of the unknowns calibrators
| |
| that are most consistent with the standard calibrator antenna gains.
| |
| | |
| Check the log output to make sure that reasonable flux densities are
| |
| obtained.
| |
| | |
| Keyword arguments:
| |
| vis -- Name of input visibility file
| |
| default: none; example: vis='ngc5921.ms'
| |
| caltable -- Name of input calibration table
| |
| default: none; example: caltable='ngc5921.gcal'
| |
| This cal table was obtained from task gaincal.
| |
| fluxtable -- Name of output, flux-scaled calibration table
| |
| default: none; example: fluxtable='ngc5921.gcal2'
| |
| The gains in this table have been adjusted by the
| |
| derived flux density each calibrator. The MODEL_DATA
| |
| column has NOT been updated for the flux density of the
| |
| calibrator. Use setjy to do this if it is a point source.
| |
| reference -- Reference field name(s)
| |
| The names of the fields with a known flux densities or
| |
| visibilties that have been placed in the MODEL column
| |
| by setjy or ft for a model not in the CASA system.
| |
| The syntax is similar to field. Hence field index or
| |
| names can be used.
| |
| default: none; example: reference='1328+307'
| |
| transfer -- Transfer field name(s)
| |
| The names of the fields with unknown flux densities.
| |
| These should be point-like calibrator sources
| |
| The syntax is similar to field. Hence source index or
| |
| names can be used.
| |
| default: '' = all sources in caltable that are not specified
| |
| as reference sources. Do not include unknown target sources
| |
| example: transfer='1445+099, 3C84'; transfer = '0,4'
| |
| | |
| NOTE: All fields in reference and transfer must have solutions
| |
| in the caltable.
| |
| | |
| append -- Append fluxscaled solutions to the fluxtable.
| |
| default: False; (will overwrite if already existing)
| |
| example: append=True
| |
| refspwmap -- Vector of spectral windows enablings scaling across
| |
| spectral windows
| |
| | |
| Keyword arguments:
| |
| vis -- Name of input visibility file
| |
| default: none; example: vis='ngc5921.ms'
| |
| caltable -- Name of input calibration table
| |
| default: none; example: caltable='ngc5921.gcal'
| |
| This cal table was obtained from task gaincal.
| |
| fluxtable -- Name of output, flux-scaled calibration table
| |
| default: none; example: fluxtable='ngc5921.gcal2'
| |
| The gains in this table have been adjusted by the
| |
| derived flux density each calibrator. The MODEL_DATA
| |
| column has NOT been updated for the flux density of the
| |
| calibrator. Use setjy to do this if it is a point source.
| |
| reference -- Reference field name(s)
| |
| The names of the fields with a known flux densities or
| |
| visibilties that have been placed in the MODEL column
| |
| by setjy or ft for a model not in the CASA system.
| |
| The syntax is similar to field. Hence field index or
| |
| names can be used.
| |
| default: none; example: reference='1328+307'
| |
| transfer -- Transfer field name(s)
| |
| The names of the fields with unknown flux densities.
| |
| These should be point-like calibrator sources
| |
| The syntax is similar to field. Hence source index or
| |
| names can be used.
| |
| default: '' = all sources in caltable that are not specified
| |
| as reference sources. Do not include unknown target sources
| |
| example: transfer='1445+099, 3C84'; transfer = '0,4'
| |
| | |
| NOTE: All fields in reference and transfer must have solutions
| |
| in the caltable.
| |
| | |
| append -- Append fluxscaled solutions to the fluxtable.
| |
| default: False; (will overwrite if already existing)
| |
| example: append=True
| |
| refspwmap -- Vector of spectral windows enablings scaling across
| |
| spectral windows
| |
| default: [-1]==> none.
| |
| Example with 4 spectral windows:
| |
| if the reference fields were observed only in spw=1 & 3,
| |
| and the transfer fields were observed in all 4 spws (0,1,2,3),
| |
| specify refspwmap=[1,1,3,3].
| |
| This will ensure that transfer fields observed in spws 0,1,2,3
| |
| will be referenced to reference field solutions only in
| |
| spw 1 or 3.
| |
| </pre>
| |