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== Create a CASA UDBms file from a Miriad UDB file == | == Create a CASA UDBms file from a Miriad UDB file == | ||
In CASA, | In CASA, use task '''importeovsa''': | ||
<pre> | <pre> | ||
default(importeovsa) | |||
</pre> | </pre> | ||
and set the input idbfiles to the scan or scans you wish to work with, as in this example: | and set the input idbfiles to the scan or scans you wish to work with, as in this example: | ||
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idbfiles = '/data1/eovsa/fits/UDB/2017/UDB20170712183919' | idbfiles = '/data1/eovsa/fits/UDB/2017/UDB20170712183919' | ||
</pre> | </pre> | ||
You can check the inputs by | |||
<pre> | |||
inp | |||
</pre | |||
You can change other inputs at this time, as desired, but the defaults are generally okay. Then to execute, type | You can change other inputs at this time, as desired, but the defaults are generally okay. Then to execute, type | ||
<pre> | <pre> | ||
go | go | ||
</pre> | </pre> | ||
A single scan takes about 1 minute using one CPU. | A single scan takes about 1 minute using one CPU. The task will create a CASA measurement set under the current directory ended with "_scl.ms". In this case, it is "UDB20170712183919_scl.ms" | ||
== Find and Apply the Reference Calibration == | == Find and Apply the Reference Calibration == |
Revision as of 00:01, 23 July 2017
Brief Instructions for Calibrating UDB Data
Preparation
On pipeline, create a working directory in which the software will create any output, including the measurement set. Start CASA (takes a minute or so to load) and change to that directory
casa cd /data1/dgary/solar/20170712_AR
Check if the UDB file you want already exists, in the appropriate subdirectory of /data1/eovsa/fits/UDBms. If so, you can skip the next section.
Create a CASA UDBms file from a Miriad UDB file
In CASA, use task importeovsa:
default(importeovsa)
and set the input idbfiles to the scan or scans you wish to work with, as in this example:
idbfiles = '/data1/eovsa/fits/UDB/2017/UDB20170712183919'
You can check the inputs by
inp </pre You can change other inputs at this time, as desired, but the defaults are generally okay. Then to execute, type <pre> go
A single scan takes about 1 minute using one CPU. The task will create a CASA measurement set under the current directory ended with "_scl.ms". In this case, it is "UDB20170712183919_scl.ms"
Find and Apply the Reference Calibration
At present, the task_calibeovsa script is not automatically loaded as a CASA task, so momentarily change to the appropriate folder and import the task, then change back to your desired folder:
cd /home/user/bchen/eovsa/suncasa/tasks/ import task_calibeovsa as tc cd /data1/dgary/solar/20170712_AR tc.calibeovsa('/data1/dgary/solar/20170712_AR/UDB20170712183919_scl.ms',flagant='13~15')
This should produce a standard frequency-synthesis image with natural weighting, and also create a directory UDB20170712183919_scl.ms.flagversions.