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Reduction and analysis tools for LMT/B4R

Project description

b4r

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Reduction and analysis tools for LMT/B4R

Installation

pip install b4r==2024.7.0

Usage

Reduce individual data

import b4r.pipe 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)

import b4r.pipe as Bp

Bp.globBaseDir = '/home/hoge/b4r'
Bp.globLogDir = '/home/hoge/b4r/logv1'
Bp.PipelineAnalysisBatchRun()

You need to specify following pathes.

b4r.pipe.globBaseDir

  • The path where xffts and lmttpm directories 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.

b4r.pipe.globLogDir

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

Products

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 Taniguchi et al. 2021)
  • MS2 (CASA readable format)

Correspondence

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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