b4rpipe 0.1.3

Pipeline reduction tools for B4R (2mm heterodyne reciver) on LMT 50m @Mexico

b4rpipe

Pipeline reduction tools for B4R/LMT data.

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Installation

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$ pip install b4rpipe

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Usage

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Reduce individual data

$ python
$ >>> import b4rpipe as Bp
$ >>> Bp.globBaseDir = '/home/hoge/b4r'
$ >>> Bp.globLogDir = '/home/hoge/b4r/logv1'
$ >>> Bp.PipelineAnalysis(86420)

This example shows a pipeline analysis for the data obsid 86420.

Reduce all data (for database)

$ python
$ >>> import b4rpipe as Bp
$ >>> Bp.globBaseDir = '/home/hoge/b4r'
$ >>> Bp.globLogDir = '/home/hoge/b4r/logv1'
$ >>> Bp.PipelineAnalysisBatchRun()

You need to specify following pathes.

b4pipe.globBaseDir

• The path where "xffts" and "lmttpm" directorys are located.
• XFFTS binary data (e.g., xffts20181003111006.xfftsx.01) should be stored under the "xffts" directory.
• LMT antenna log data (e.g., lmttpm_2018-04-22_075858_01_0000.nc) should be stored under the "lmttpm" directory.

b4rpipe.globLogDir

• The path where outputs are created.
• Anywhere you like is OK.

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Products

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The script create following outputs (if possible).

• Continuum Map Qlook (Pointing offset, efficiency (only for uranus), etc.)
• Line (SiO) Map Qlook (Pointing offset, etc.)
• Spectrum Qlook (with auto-flag)
• Time series spectrum of PSW data (numpy readable format)
• GoDec calibration results (see Taniguch et al. 2021)
• MS2 (CASA readable format)

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Data query and download (only for internal use now)

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If you are in the NAOJ or IoA (U. Tokyo) local network, you can access the B4R ftp server.

$ python
$ >>> import b4rpipe as Bp
$ >>> Bp.PipelineAnalysis(86420,DataDownload=True,username='hogehoge',password='*****')

Then "rawdata" and "calibrated" directory appears at the current directory.

$ ls
raw calibrated
$ ls rawdata
lmttpm xffts
$ls calibrated
86420

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Correspondence

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• B4R 2018/2019 (obsnum<=087433) data <-> CASA MS2

Name	B4R	CASA MS2
polarization	A	(correlation or stokes) YY
polarization	B	(correlation or stokes) XX
sideband	LSB	spw 0
sideband	USB	spw 1

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Information

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• B4R webpage: http://lmtgtm.org/b4r/?lang=en
• Contact: Yuki Yoshimura (email: astro.yoshimura(at)gmail.com)