VLA: Getting Started: Difference between revisions

From CASA Guides
Jump to navigationJump to search
No edit summary
No edit summary
 
(11 intermediate revisions by 3 users not shown)
Line 1: Line 1:
== Introduction ==
== Introduction ==


Before delving into data calibration, editing, etc., it is very important to understand the structure and contents of a measurement set (the format in which EVLA data are stored). These pages will guide the new user through loading and initial inspection of their data.
Before delving into data calibration, editing, etc., it is very important to understand the structure and contents of a measurement set (the format in which the data are stored). These pages will guide the new user through loading and initial inspection of their data, as well as on the structure and organization of the measurement set (MS).  For a Guide on getting started with the CASA software, please see [[Getting Started in CASA]].


Currently, these Guides include information on loading and inspecting EVLA data, as well as on the structure and organization of the measurement set (MS).
If you are using AIPS to reduce your data please refer to [http://www.aips.nrao.edu/CookHTML/CookBookap5.html#x178-414000E Appendix E of the AIPS cookbook].
 
If you are using AIPS to reduce your EVLA data we refer to Appendix E of the AIPS cookbook.


== Getting Started CASA Guides ==
== Getting Started CASA Guides ==
Line 13: Line 11:
<blockquote>
<blockquote>
* Obtaining data from the archive
* Obtaining data from the archive
* Starting CASA and importing the measurement set
** Selecting a set of scans
** Choosing to average data
** Retrieval process
* Starting CASA and initial inspection: listobs
* Initial data flagging: online flags, zero flags, and shadow flags
* Initial data flagging: online flags, zero flags, and shadow flags
* Choosing to average data
</blockquote>
 
* '''[[Inspecting Data]]'''
 
<blockquote>
* Checking the online flags
* Checking the weather information
* Initial inspection: listobs
* Graphical display: plotms
* Graphical display: viewer
</blockquote>
</blockquote>


Line 23: Line 33:
* The measurement set directory structure and contents
* The measurement set directory structure and contents
* Inspecting MS contents in CASA
* Inspecting MS contents in CASA
* Advanced information about MS structure
* Advanced: using information about MS structure
</blockquote>
</blockquote>


* '''[[Inspecting Data]]'''
* '''More advanced: EVLA Guides'''


<blockquote>
<blockquote>
* Checking the online flags
* [[EVLA Tutorials | Tutorials]]
* Checking the weather information
* [[CASA Hints, Tips, and Tricks | Hints, Tips, & Tricks]]
* Initial inspection: listobs
* [[CASA User Scripts and Tasks]]
* Graphical display: plotms
* Graphical display: viewer
</blockquote>
</blockquote>

Latest revision as of 17:23, 9 May 2016

Introduction

Before delving into data calibration, editing, etc., it is very important to understand the structure and contents of a measurement set (the format in which the data are stored). These pages will guide the new user through loading and initial inspection of their data, as well as on the structure and organization of the measurement set (MS). For a Guide on getting started with the CASA software, please see Getting Started in CASA.

If you are using AIPS to reduce your data please refer to Appendix E of the AIPS cookbook.

Getting Started CASA Guides

  • Obtaining data from the archive
    • Selecting a set of scans
    • Choosing to average data
    • Retrieval process
  • Starting CASA and initial inspection: listobs
  • Initial data flagging: online flags, zero flags, and shadow flags
  • Checking the online flags
  • Checking the weather information
  • Initial inspection: listobs
  • Graphical display: plotms
  • Graphical display: viewer
  • The measurement set directory structure and contents
  • Inspecting MS contents in CASA
  • Advanced: using information about MS structure
  • More advanced: EVLA Guides