Usage of computeDurationOfScan

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This function is used by timeOnSource() to empirically determine the number of subscans and the total duration of all the subscans of a particular scan.


au.computeDurationOfScan(scanNumber, t=None, vis=None, returnSubscanTimes=False, verbose=False)
  • scanNumber = the scan number, simply for generating a file list of timestamps
  • t = a sequence of integration timestamps (as from msmd.timesforscans(1)), optional for casa >= 4.1.0
  • vis = the name of the measurement set (not necessary if t is given)
Returns: 1) duration in seconds 2) the number of subscans and if returnSubscanTimes==True 3) the begin/end timestamps of each subscan (in MJD seconds)


CASA <1>: au.computeDurationOfScan(1, vis='')
  Out[1]: (17.279994964599609, 3)

CASA <2>:'')
CASA <3>: au.computeDurationOfScan(1, msmd.timesforscan(1))
  Out[3]: (17.279994964599609, 3)
CASA <4>: au.computeDurationOfScan(1, msmd.timesforscan(1), returnSubscanTimes=True)
 {1: [4881277289.4000006, 4881277295.1119995],
  2: [4881277297.1760006, 4881277302.8879995],
  3: [4881277304.9520006, 4881277310.6639996]})

-- ToddHunter - 2013-09-21
Topic revision: r1 - 2013-09-21, ToddHunter
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