Introduction to CASA and Basic Data Reduction Overview

Introduction to CASA and Basic Data Reduction Overview

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Description

Introduction to CASA
and Basic Data
Reduction Overview
Steven T. Myers
CASA Project Scientist
(NRAO) Beta Release Status
CASA Status:
in Beta Release since October 2007
roughly quarterly “patches”
Current Release: Beta Release Patch 3
target release date October 15
general release
register at my.nrao.edu , no password for download
CASA Tutorial -- 7 October 2008
2 Beta Disclaimer
This really is a Beta Release!
still missing functionality
there are known failure modes
will find new problems
Improvements in upcoming patches
move towards handling ALMA/EVLA “use cases”
better handling of calibration
CASA Tutorial -- 7 October 2008
3 Curriculum
schedule:
~1 hour orientation lecture + demo (this talk)
hands-on data reduction with datasets:
VLA Continuum Polarization (3C129)
VLA Spectral Line (NGC2403)
BIMA 3mm line mosaic (NGC4826)
intended to be interactive
if you need help - ask!
CASA Tutorial -- 7 October 2008
4 Starting CASA
From your workstation (running RHEL):
type ‘casapy-test’ at prompt
this is the pre-release test version of Beta Patch 3 at AOC
quit CASA using ‘exit’
brings up IPython shell plus casalogger GUI
Other releases available for download
not yet built for Patch 3...
CASA Tutorial -- 7 October 2008
5 Getting User Support
First stop: Read the Manual!
CASA Home: http://casa.nrao.edu
Cookbook, and “help” within CASA
CASA Helpdesk & Support Cadres
“Helpdesk” under my.nrao.edu
submit Issues
User Support Specialists (Gustaaf at AOC)
CASA Tutorial -- 7 October ...

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Introduction to CASA and Basic Data Reduction Overview Steven T. Myers CASA Project Scientist (NRAO) Beta Release Status CASA Status: in Beta Release since October 2007 roughly quarterly “patches” Current Release: Beta Release Patch 3 target release date October 15 general release register at my.nrao.edu , no password for download CASA Tutorial -- 7 October 2008 2 Beta Disclaimer This really is a Beta Release! still missing functionality there are known failure modes will find new problems Improvements in upcoming patches move towards handling ALMA/EVLA “use cases” better handling of calibration CASA Tutorial -- 7 October 2008 3 Curriculum schedule: ~1 hour orientation lecture + demo (this talk) hands-on data reduction with datasets: VLA Continuum Polarization (3C129) VLA Spectral Line (NGC2403) BIMA 3mm line mosaic (NGC4826) intended to be interactive if you need help - ask! CASA Tutorial -- 7 October 2008 4 Starting CASA From your workstation (running RHEL): type ‘casapy-test’ at prompt this is the pre-release test version of Beta Patch 3 at AOC quit CASA using ‘exit’ brings up IPython shell plus casalogger GUI Other releases available for download not yet built for Patch 3... CASA Tutorial -- 7 October 2008 5 Getting User Support First stop: Read the Manual! CASA Home: http://casa.nrao.edu Cookbook, and “help” within CASA CASA Helpdesk & Support Cadres “Helpdesk” under my.nrao.edu submit Issues User Support Specialists (Gustaaf at AOC) CASA Tutorial -- 7 October 2008 6 Tutorial Contents I - Interface II - Tasks & Tools III - Data in CASA IV - Data Processing Workflow V - Example Use Cases CASA Tutorial -- 7 October 2008 7 I - Interface Documentation IPython & Python Crashes & Recovery CASA help CASA task interface CASA Tutorial -- 7 October 2008 8 CASA Documentation CASA Analysis cookbook (draft): http://casa.nrao.edu/Doc/Draft/Cookbook/casa_cookbook.pdf CASA User Reference Manual: http://casa.nrao.edu/docs/casaref/CasaRef.html Python: http://python.org/doc (e.g., see Tutorial for novices) IPython: http://ipython.scipy.org/moin/Documentation matplotlib: http://matplotlib.sourceforge.net/ CASA Tutorial -- 7 October 2008 9 CASA Interface IPython shell access autoparenthesis (autocall) command history session logging (ipython.log, casapy.log) numbered input/output history/searching Python see standard manuals, Cookbook Appendix D CASA Tutorial -- 7 October 2008 10