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CASA Scripts and Data

As part of our testing and training programs, we have developed a number of "use case" and "demo" scripts. Here are links to a selection of these:

NOTE: All of the scripts on this page still use plotxy. We are close but not right there with having all plotxy functionality available in plotms (multi-paneling is still missing). We recommend strongly to use plotms for most of the processing and will update the scripts once all functions can be performed in plotms. Nevertheless, all scripts should work but plotxy maybe very slow on your machine. For more up-to-date scripts, see the reduction tutorials on CASAguides.nrao.edu

VLA HI Line Data (NGC5921)

This is a relatively small dataset suitable for a quick demo.

The data is packaged with CASA, no need to download
NGC5921 Demo Script (casapy script)
NGC5921 Moment 0/1 Image (PNG 20KB)

At right: Integrated VLA HI line intensity image (false color) with HI velocity field superposed (contours) for the galaxy NGC5921.

VLA HI Line Data (NGC2403)

This is a larger dataset (the MS will be 5.2GB) and it will take longer to run (~40m) but produces a much nicer image.

NGC2403 data (tar-gzipped VLAExport 513MB)
NGC2403 Tutorial Script (casapy script)
NGC2403 Moment 0 Image (PNG 183KB)

At right: Integrated VLA HI line intensity greyscale image (from moment zero map) of the galaxy NGC2403.

BIMA CO Line Data (NGC4826)

This is a 3mm CO line mosaic from the BIMA SONG survey (Helfer, Thornley, Regan, et al., 2003, ApJS, 145, 259).

NGC4826 data (tar-gzipped UVFITS 66MB)
NGC4826 Tutorial Script (casapy script)
NGC4826 Moment 1 Image (PNG 183KB)

At right: False-color image of the CO velocity field (from a moment 1 image) for the BIMA SONG galaxy NGC4826.

VLA 3.6cm Continuum (CLASS B1608+656)

This is a 3.6cm VLA continuum dataset taken in 1995 as follow up to the CLASS gravitational lens survey (S.T. Myers et al., 1995, ApJL, 447, L5). This is a small dataset suitable for quick demos.

B1608+656 VLA data (VLAExport 3.4MB)
B1608+656 Demo Script (casapy script)
B1608+656 3.6cm Image (PNG 31KB)

At right: Continuum image of 4-image "quad" gravitational lens system CLASS B1608+656 from a 5-minute VLA 3.6cm snapshot.

VLA 6cm Continuum Polarization (Jupiter)

This is a 6cm VLA continuum polarimetry dataset taken in 1999 as part of the VLA flux calibration test program.

Jupiter/FLUX99 VLA data (UVFITS 129MB)
Jupiter Tutorial/Demo Script (casapy script)
Jupiter 6cm Polarization Image (PNG 24KB)

At right: Image of Jupiter 6cm intensity (false color) with polarized intensity (yellow contours) and polarization vectors (white, rotated 90deg to show B-field direction).

VLA 6cm Continuum Polarimetry (3C129)

This is a larger dataset (the raw data is 107MB) and it will take longer to run (~40m). This combines B and C configuration data as 3C129 has a lot of large-scale emission. This makes a nice image.

3C129 data (tar-gzipped VLAExport 107MB)
3C129 Tutorial Script (casapy script)
3C129 Polarization Image (PNG 63KB)

At right: Image of 3C129 6cm intensity (false color) with polarization vectors (white, rotated 90deg to show B-field direction).

For Experienced Users: CASA Scripts and Data

Here are some more data and scripts, intended for more experienced CASA users and exploring more technical uses of the package. These scripts are not generally set up as demos or tutorials, and users will likely need to read through them carefully and in some cases cut-and-paste commands to their casapy session.

SMA CO Line Data (G19.3+0.07)

This is a SMA dataset with a large number of spectral channels.

SMA data (tar UVFITS 891MB)
SMA example script (casapy script)
SMA on Spitzer Image (PNG 60KB)

At right: Spitzer GLIMPSE 8 um image with green contours showing the integrated CO(2-1) emission from SMA for infrared dark cloud G19.3+0.07 (Brogan et al. in prep).

CASA Training Materials

We have held a number of training sessions for CASA. We intend to archive the materials here for use online for training, and for building new training sessions. These are available from the CASA Training Page. And even more so, we provide very detailed data reduction guides on the CASAguides webpage.

CASA Documentation and Help

There are a number of reference documents and help facilities available to the user, for more information, see the Using CASA page.