ALMA Member ObsUnitSet README
=============================
A brief description of the main actions, categories and files of the ALMA data at the Member Observing Unit Set (OUS) level.


HOW TO
======
* Get the FITS products:
     Download and untar the product/*001_of_001.tar file or download files individually from the 'product' category

* Check the quality or processing of the data:
     Download and untar the auxiliary/*auxiliary.tar or download the qa/*.qa2_report.pdf and qa/*.weblog.tgz individually
     from the 'auxiliary' category

* Create the calibrated Measurement Sets (MS):
     1) Download and untar the *auxiliary.tar and *asdm.tar files
     2) Install the latest CASA software (or for manually reduced data the CASA version specified in the QA2 report)
     3) Change into the 'script' subdirectory, and run 'casa --pipeline -c *scriptForPI.py' 

     A more detailed description of how to create the calibrated MS can be found in the 'Instructions' section
     of qa/*.qa2_report.pdf.


DATA CATEGORIES
===============
* auxiliary                             calibration tables, scripts, logs and quality assurance reports

* product                               FITS products for science targets and calibrators (potentially incomplete)

* raw                                   uncalibrated raw data that were used to make the final products

* raw (semipass)                        uncalibrated raw data that are flawed or incomplete and were not used

* external                              externally contributed data products (may be present in some cases)


FILES
=====
For a full description of the ALMA data products see https://almascience.org/processing/qa2-data-products.
Depending on the type of data or processing, not all of the following files may be present.

Main science imaging products:

     product/*_sci*cont*pbcor.fits      primary beam corrected aggregate interferometric continuum images
     product/*_sci*cube*pbcor.fits      primary beam corrected, continuum subtracted interferometric spectral line cubes
     product/*sd.im.fits                single-dish images


Main quality reports:

     qa/*.qa2_report.{pdf,html}         QA2 data quality evaluation report and instructions for calibrating the raw data
     qa/*.weblog.tgz                    data calibration and imaging diagnostic tables and plots


Selected additional data products:

     *.README.txt                       this file

     calibration/*                      files needed for the restoring of the calibrated MS

     log/*.casa_commands.log            list of equivalent CASA commands for pipeline processed data
     log/*.casa-*.log                   processing log files if they are not included in the weblog

     product/*spw#.mfs.*.fits           per-spectral window (SPW) "multifrequency synthesis" (=continuum) product
     product/*.pb.fits.gz               primary beam response
     product/*.mask.fits.gz             mask used in the imaging process
     product/*spw#.repBW.*.fits         optional product made with a channel spacing equal to the PI-specification

     qa/*.qa0_report.{pdf,html}         observing conditions and initial quality assessment

     raw/*asdm.sdm.tar                  uncalibrated raw data

     script/*.casa_pipescript.py        script to create pipeline-imaged data products
     script/*.ms.scriptForImaging.py    script to create manually-imaged data products
     script/*.scriptForPI.py            script to generate the calibrated MS