NRAO Home > CASA > CASA Toolkit Reference Manual
sd.dototalpower - Function

5.1.1 Equivalent function with dototalpower in GBTIDL
Description

The method performs calibration for CAL on,off signals. Adopted from GBTIDL dototalpower.

Arguments





Inputs

calon

The ’cal on’ subintegration as a scantable

allowed:

scantable

Default:

caloff

The ’cal off’ subintegration as a scantable

allowed:

scantable

Default:

tcalval

User supplied Tsys

allowed:

float

Default:

0.0 (use Tcal in the data)





Returns
scantable

Example

   s = sd.scantable(’OrionS_rawACSmod’,average=False)  
   sel = sd.selector()  
   # calibration scans  
   sel.set_types([srctype.poncal,srctype.poffcal])  
   s.set_selection(sel)  
   ssubon=s.copy()  
   s.set_selection()  
   sel.reset()  
   # off-calibration scans  
   sel.set_types([srctype.pson,srctype.psoff])  
   s.set_selection(sel)  
   ssuboff=s.copy()  
   s.set_selection()  
   sel.reset()  
   # calibration  
   cals = sd.dototalpower(ssubon,ssuboff)  
   # ON scan  
   sel.set_types(srctype.pson)  
   cals.set_selection(sel)  
   sig = cals.copy()  
   cals.set_selection()  
   sel.reset()  
   # OFF scan  
   sel.set_types(srctype.psoff)  
   cals.set_selection(sel)  
   ref = cals.copy()  
   cals.set_selection()  
   sel.reset()  
   # get calibrated data  
   ress = sd.dosigref(sig,ref,smooth=1)


More information about CASA may be found at the CASA web page

Copyright 2016 Associated Universities Inc., Washington, D.C.

This code is available under the terms of the GNU General Public Lincense


Home | Contact Us | Directories | Site Map | Help | Privacy Policy | Search