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AGENDA FOR SMA MIRIAD USERS' MEETING 2017
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2017-12-18 teleconf at 10:00am EST
Agenda:
- Issue 1 - Review of previous meetings since 2015 Fall
- September 11, 2015
- September 28, 2015
- October 05, 2015
- November 09, 2015
- November 23, 2015
- December 07, 2015
- January 11, 2016
- February 22, 2016
- March 28, 2016
- May 09, 2016
- June 13, 2016
- July 18, 2016
- August 29, 2016
- September 21, 2017
- Issue 2 - A guide for fresh users of Miriad SMA-WB
- Review of environment setup for SMA Miriad on RTDC system -
SMA Miriad on CfA Computer System
- Prompt login message for latest version -
MIRIAD version Miriad SMA-WB5.0.6 (test for SWARM only - 2x4 chunks; CSDI & MOSCSDI; SMODEL)
[SMA] loaded from MIR=/home/miriad/miriad_WB
- Conflicts with other Miriad environment setting -
Please keep only one Miriad sourcing in one's .login or .cshrc
Environmental setting from more than one different Miriad versions may cause Fatal errors
- Issue 3 - Specific issues
- SMA data files exported from other paths & adaptors -
idl2miriad of IDL -
CASA, AIPS and others -
- UVFITS
fits in Miriad adapts standard UVFITS
- Test/exam data-files exported via various paths -
uvindex -- checks the content given a uv dataset, reporting details about
each of the integrations,
frequency configurations,
polarization information,
observed sources;
uvlist -- checks the variables and values of visibilities in text
uvplt or smauvplt -
uvspec or smauvspec -
- A maximum number of channels limited in imaging -
maximum number of channels for an imaging cube is 8192? from the latest invert.
- To view the frequency spectral configuration -
uvindex - -
inspects through all the data and variables, reporting N sets of frequency configurations given a data set
prthd --
goes through the header, reporting the first frequency configuration detected, only good for single frequency configuration
- To reduce the spectral resolution -
uvcat - -
can handle spectral data in daul frequency configurations
uvaver - -
bin spectral channels of a dataset, works only for single frequency configuration
- Issue 4 - Miriad pre-processing SMA original data, archived and MIR-formatted
- Pre-process 1 - converting data and make it ready for reduction with Miriad SMA-WB
smalod -
- identifies & fixes data issues, often requiring special patches from a programmer
- converts MIR to Miriad format
uvindex -
Output: Miriad formatted data
- Pre-process 2 - converting data and make it ready for reduction with other software packages adapting UVFITS and Miriad format
uvcat -
- separates frequency configurations from a dual-RX mode
uvaver -
- extracts SWARM chunks (windows) to make the uv data adaptive to general Miriad tasks
smafix -
- applies system temperature corrections
uvplt or smauvplt -
uvspec or smauvspec -
fits -
- exports pre-processed (2 steps) SMA data to UVFITS for further calibrations in CASA/AIPS or other software packages
Output: UVFITS and/or Miriad formatted data with Tsys corrections
- Issue 5 - Calibration & imaging with globally distributed Miriad
- Adapting uv data to other Miriad packages -
uvaver -
- in Pre-process 2, spectral channels can be binned or spectral windows can be separated;
the pre-processed (2 steps)
SMA data are adaptive to other Miriad packages globally
distributed via ATNF, BIMA/CARMA,
and SMA (SMA-Miriad 1.5.1)
- Calibration/imaging pipelines for data taken for a variety of science program -
- swarmcali_a.csh
an example of C-shell script for calibration of ASIC data taken in hybrid-correlators (ASIC+SWARM)
- CASA/AIPS
UVFITS & FITS -
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from Pre-process (2 steps), output UVFITS can be adapted for further reduction in CASA/AIPS
and other packages
depending on users' choice
FITS images exported from Miriad can be adapted for analysis in CASA/AIPS
- Issue 6 - Data status & data issues
- Issue 7 - Users' communication
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