5.1.1.0 sd.calfs - Function

NRAO Home > CASA > CASA Toolkit Reference Manual

sd.calfs - Function

5.1.1 Calibration function for frequency switched data
Description

Calibrate GBT frequency switched data. Adopted from GBTIDL getfs. Currently calfs identify the scans as frequency switched data if source type enum is fson and fsoff. The data must contains ’CAL’ signal on/off in each integration. To identify ’CAL’ on state, the source type enum of foncal and foffcal need to be present.

Arguments


Inputs
scantab	Input data as a scantable
	allowed:	scantable
	Default:
scannos	A list of scan numbers to be calibrated
	allowed:	(list of) integer
	Default:	[] (all data)
smooth	Optional box smoothing order for the reference
	allowed:	int
	Default:	1 (no smoothing)
tsysval	Optional user specified Tsys
	allowed:	float
	Default:	0.0 (use Tsys in the data)
tauval	Optional user specified optical depth
	allowed:	float
	Default:	0.0
verify	Verify calibration if True
	allowed:	bool
	Default:	False

Returns
scantable

Example

   s=sd.scantable(’FLS3a_HI.asap’)                 # load in the saved ASAP dataset with FLS3a
   scanns = s.getscannos()                         # get a list of the scan numbers in the scantable
   sn=list(scanns)
   res=sd.calfs(s,sn)                              # Do a frequency switched calibration on the scans

[next] [prev] [prev-tail] [front] [up]

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

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