|
|
| (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>
| |
