MIRIAD-CASA Dictionary
The Table below provides a list of common Miriad tasks, and their equivalent CASA tool or tool function names. The two packages differ in both their architecture and calibration and imaging models, and there is often not a direct correspondence. However, this index does provide a scientific user of CASA who is familiar with MIRIAD, with a simple translation table to map their existing data reduction knowledge to the new package.
In particular, note that the procedure of imaging and cleaning of visibility data between CASA and MIRIAD differs slightly. In MIRIAD the tasks invert, clean and restor are used in order to attain "CLEAN" images, whereas in CASA the task clean/tclean achieves the same steps as a single task.
MIRIAD Task | CASA task/tool | Description |
---|---|---|
atlod | importatca | Import ATCA RPFITS files |
blflag | plotms/msview | Interactive baseline based editor/flagger |
cgcurs | viewer | Interactive image analysis |
cgdisp | viewer | Image display, overlays |
clean | clean/tclean | Clean an image |
delhd | imhead (mode='del'), clearcal | Delete values in dataset/remove calibration tables |
fits | importmiriad,importfits, exportfits, importuvfits, exportuvfits | FITS uv/image filler |
gethd | imhead (mode='get') | Return values in image header |
gpboot | fluxscale | Set flux density scale |
gpcal | gaincal, polcal | Polarization leakage and gain calibration |
gpcopy | applycal | Copy calibration tables from one source to another |
gpplt | plotcal, plotms | Plot calibration solutions |
imcomb | immath | Image combination |
imfit | imfit | Image-plane component fitter |
impol | immath (mode='poli' or 'pola') | Manipulate polarization images (see example) |
imstat | imstat | Image statistics |
imsub | imsubimage | Extract sub-image |
invert | clean/tclean | Synthesis imaging/make dirty map |
linmos | im tool (im.linearmosaic) | Linear mosaic combination of images |
maths | immath | Calculations involving images |
mfboot | fluxscale | Set flux density scale |
mfcal | bandpass, gaincal | Bandpass and gain calibration |
moment | immoments | Calculate image moments |
prthd | imhead, listobs, vishead | Print header of image or uvdata |
puthd | imhead (mode='put') | Add/edit values in image header |
restor | clean | Restore a clean component model |
selfcal | clean, gaincal, etc. | Selfcalibration of visibility data |
uvplt | plotms | Plot visibility data |
uvspec | plotms | Plot visibility spectra data |
uvsplit | split | Split visibility dataset by source/frequency etc |