IRAS16293 Band9 - Calibration for CASA 3.3

• This script assumes that you have downloaded IRAS16293_Band9_UnCalibratedMSAndTablesForReduction.tgz from IRAS16293Band9#Download the data

• Details of the ALMA observations are provided at IRAS16293Band9

• This portion of the guide covers calibration of the raw visibility data. To skip to the imaging portion of the guide, see: IRAS16293_Band9_-_Imaging.

Overview

This part of the casa guide will guide you through the basic inspection of the data, paying special attention to detect data that needs to be flagged. The guide goes later to the process of full calibration to split the data at the end.

The general procedure in this guide follows the other ALMA CASA guides: NGC3256Band3 and AntennaeBand7.

Unpack the Data

Once you have downloaded the IRAS16293_Band9_UnCalibratedMSandTablesForReduction.tgz, unpack the file in a terminal outside CASA using

tar -xvzf IRAS16293_Band9_UnCalibratedMSandTablesForReduction.tgz

cd IRAS16293_Band9_UnCalibratedMSandTablesForReduction

You have a number of files with extensions ".ms", which are CASA measurement set (MS) files. You will also see files containing system temperature (Tsys), water vapor radiometer (WVR), and antenna position information.

To start CASA type

casapy

Be sure that you are using the right version indicated for this guide.