mask¶
Create .FITS mask from a catalog and (optionally) merge with an existing .FITS mask provided by the user. WARNING - At the moment this worker can only be executed on a single target at a time. Iterating over N targets is not done automatically.
enable¶
bool
Execute the mask worker.
label_in¶
str, optional, default = corr
Label of the .MS file that contains information about the target.
label_out¶
str, optional, default = catalog_mask
Prefix used for the name of the .FITS mask created by this worker. The full name consists of this prefix followed by the target name extracted by the observation_config worker. To use this output .FITS mask as a clean mask in the self_cal worker users should set relevant entry of cleanmask_method to label_out.
centre_coord¶
list of str, optional, default = HH:MM:SS , DD:MM:SS
Coordinates of the centre of the field-of-view (read from reference_dir by default).
mask_size¶
int, optional, default = 1800
Number of pixels in the mask. This must be the same as img_npix in the selfcal worker.
cell_size¶
float, optional, default = 2.
Size of pixels in the mask, in units of arcsec. This must be the same as img_cell in the selfcal worker.
extended_source_map¶
str, optional, default = Fornaxa_vla.FITS
Name of the input mask for particularly-extended sources in the field.
catalog_query¶
Query catalog to select field/sources for constructing the mask.
enable
bool, optional, default = true
Enable the ‘query_catalog’ segment.
catalog
{“NVSS”, “SUMSS”}, optional, default = SUMSS
Name of catalog to query. Options are ‘NVSS’ and ‘SUMSS’.
image_width
str, optional, default = 1.2d
Angular size of the region of sky that we want to mask (e.g. ‘1.2d’, where ‘d’ indicates degrees). This should be kept larger than the dirty image.
nvss_thr
float, optional, default = 10e-3
Flux-density threshold for selecting sources in the radio map, corrected for the primary beam. Value given is in units of Jy, or is the minimum signal-to-noise ratio (i.e. number of sigma_rms), used for SoFiA source-finding.
pbcorr¶
Apply a primary-beam correction to the input image before extracting the mask.
enable
bool, optional, default = true
Enable the ‘pb_correction’ segment.
frequency
float, optional, default = 1.420405752
Since the primary-beam size changes with frequency, provide the central frequency of the considered dataset.
make_mask¶
Build mask from an existing image using SoFiA and/or a threshold cutoff.
enable
bool, optional, default = true
Enable the ‘make_mask’ segment.
mask_method
{“thresh”, “sofia”}, optional, default = sofia
The tool to use for masking. Options are ‘thresh’ and ‘sofia’.
input_image
{“pbcorr”, “path_to_mask”}, optional, default = pbcorr
Input image where to create mask ???? what is this ???
thr_lev
int, optional, default = 5
Flux-density threshold for selecting sources in the SUMSS map, corrected for the primary beam. Value given is in units of Jy, or is the minimum signal-to-noise ratio (i.e. number of sigma_rms), used for SoFiA source-finding.
scale_noise_window
int, optional, default = 101
Size of the window over which SoFiA measures the local rms, in units of pixels.
merge_with_extended¶
Merge newly-determined mask components with the existing mask for the extended source.
enable
bool, optional, default = False
Execute segment ‘merge_with_extended’.
extended_source_map
str, optional, default = extended_mask.fits
Name of the mask-image of the extended source to merge with the current mask-image.
mask_method
{“thresh”, “sofia”}, optional, default = thresh
The tool to use for masking. Options are ‘thresh’ and ‘sofia’.
thr_lev
float, optional, default = 8e-2
Flux-density threshold for selecting sources in the SUMSS map, corrected for the primary beam. Value given is in units of Jy, or is the minimum signal-to-noise ratio (i.e. number of sigma_rms), used for SoFiA source-finding.
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.