5.1.2.0 sd.scantable.average_time

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sd.scantable.average_time - Function

5.1.2 Return time average of a scan
Description

Return the (time) weighted average of a scan.

The weight argument specifies weighting scheme. Valid options are:

’none’:	no weight
’var’:	1/var(spec) weighted
’tsys’:	1/Tsys**2 weighted
’tint’:	integration time weighted (default)
’tintsys’:	Tint/Tsys**2 weightd
’median’:	median averaging

The align argument is effective only for channel. If it is True, align the spectra in velocity before averaging. It takes the time of the first spectrum as reference time.

Arguments


Inputs
mask	An optional mask (only used for ’var’ and ’tsys’ weighting)
	allowed:	bool array
	Default:	None
scanav	True averages each scan separately, False averages all scans together
	allowed:	bool
	Default:	False
weight	Weighting scheme
	allowed:	string
	Default:	’none’
align	Align the spectral in velocity before averaging
	allowed:	bool
	Default:	False
compel	True forces to average overwrapped IFs
	allowed:	bool
	Default:	False

Returns
scantable

Example

        scan = sd.scantable(’OrionS_rawACSmod_cal’,average=False)
        # time average the scantable without using a mask
        newscan = scan.average_time()

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