transform¶
Split, average and/or calibrate the data.
enable¶
bool
Execute the transform worker.
field¶
str, optional, default = target
Fields to be split off from the input MS (see split_field below) or whose phase centre should be changed (see changecentre below). Options are (separately) ‘target’, ‘calibrators’, ‘bpcal’, ‘gcal’ and ‘fcal’. Also valid is any combination of ‘bpcal’, ‘gcal’ and ‘fcal’ in a comma-separated string (e.g. ‘bpcal, fcal’).
label_in¶
str, optional, default = ‘ ‘
Label of the input dataset. If split_field/changecentre below are enabled, label_in must be a single value. Else, if concat below is enabled, label_in must include at least two comma-separated values.
label_out¶
str, optional, default = corr
Label of the output dataset.
rewind_flags¶
Rewind flags to specified version. Only works with a single-valued label_in (i.e., it does not loop over multiple comma-separated values in label_in).
enable
bool, optional, default = False
Enable the ‘rewind_flags’ segment.
version
str, optional, default = ‘ ‘
Flag version to restore. Note that all flag versions saved after this version will be deleted.
split_field¶
Make new MS of targets or calibrators.
enable
bool, optional, default = True
Enable the ‘split_field’ segment.
time_avg
str, optional, default = ‘ ‘
Time averaging to apply to the data, in units of seconds. If this parameter is instead set to ‘’ or ‘0s’ then no time averaging is applied.
chan_avg
int, optional, default = 1
Frequency averaging to apply to the data, given as the number of channels per frequency bin. If this parameter is set to ‘’, ‘0’, or ‘1’, then no frequency averaging is applied.
col
str, optional, default = corrected
Column to be split, where the default is ‘corrected’.
correlation
str, optional, default = ‘ ‘
Select the correlations, e.g. ‘XX’, ‘YY’. Setting this to ‘’ means that all correlations are selected.
scan
str, optional, default = ‘ ‘
Select the scan(s), e.g. ‘0,2,5’. Setting this to ‘’ means that all scans are selected.
create_specweights
bool, optional, default = True
Create a WEIGHT_SPECTRUM column in the output MS.
spw
str, optional, default = ‘ ‘
Select spectral windows and channels, following the same syntax as for the ‘mstransform’ task in CASA. Setting this to ‘’ means that all spectral windows and channels are selected.
antennas
str, optional, default = ‘ ‘
Select antennas, following the same syntax as for the ‘mstransform’ task in CASA. Setting this to ‘’ means that all antennas are selected.
nthreads
int, optional, default = 1
Number of OMP threads to use (currently maximum limited by number of polarizations)
otfcal
Apply on-the-fly (OTF) calibration.
enable
bool, optional, default = False
Enable the ‘otfcal’ segment.
callib
str, optional, default = ‘ ‘
Name of the callib file to be used, if user has their own.
label_cal
str, optional, default = ‘ ‘
Label of the calibration tables to be used.
pol_callib
str, optional, default = ‘ ‘
Name of the polarization callib file to be used. A corresponding .json file must exist.
label_pcal
str, optional, default = ‘ ‘
Label of the polarization calibration tables to be used.
output_pcal_ms
{“final”, “intermediate”, “both”}, optional, default = final
Controls which MSs are produced with polcal in effect. ‘final’ will have polcal-corrected data in DATA. ‘intermediate’ will have KGB-corrected data in DATA and polcal-corrected data in CORRECTED_DATA. ‘both’ will produce both (second one, the ‘intermediate’, will be labelled ‘tmp_’+label_out).
derotate_pa
bool, optional, default = True
Apply parallactic angle derotation, to put QU into the sky polarization frame.
interpolation
Overrides interpolations settings for OTF calibration
delay_cal
{“default”, “nearest”, “linear”, “nearestPD”, “linearPD”}, optional, default = nearest
Interpolation type (in time) for K-Jones (delay) solutions. ‘nearest’ is recommended for CASA, as ‘linear’ can produce unexpected results.
gain_cal
{“default”, “nearest”, “linear”, “nearestPD”, “linearPD”}, optional, default = linear
Interpolation type (in time) for G-Jones (gain) solutions.
bp_cal
{“default”, “nearest”, “linear”, “nearestPD”, “linearPD”}, optional, default = linear
Interpolation type (in time) for B-Jones (bandpass) solutions.
changecentre¶
Change the phase centre.
enable
bool, optional, default = False
Enable the ‘changecentre’ segment.
ra
str, optional, default = 0h0m0.0s
J2000 RA of the new phase centre, in the format XXhXXmXX.XXs .
dec
str, optional, default = 0d0m0.0s
J2000 Dec of the new phase centre, in the format XXdXXmXX.XXs .
concat¶
For each input .MS and target, concatenate together all .MS files with the different labels included in label_in (comma-separated values). The MS files are concatenated along the frequency axis. This only works if the frequency ranges covered by the MS files are contiguous and if the number of channels is the same for all MS files.
enable
bool, optional, default = False
Enable the ‘concat’ segment.
col
str, optional, default = data
Column(s) to be contatenated, where the default is ‘data’; use ‘all’ for all columns.
obsinfo¶
Get observation information.
enable
bool, optional, default = True
Enable the ‘obsinfo’ segment.
listobs
bool, optional, default = True
Run the CASA ‘listobs’ task to get observation information.
summary_json
bool, optional, default = True
Run the MSUtils summary function to get observation information written as a JSON file.
report¶
bool, optional, default = False
(Re)generate a full HTML report at the end of this worker.
cabs¶
list of map, optional, default = ‘ ‘
Specifies non-default image versions and/or tags for Stimela cabs. Running with scissors: use with extreme caution.