checkSamplers
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Gets the TDM full-resolution spws for a dataset, finds the sky subscan timerange
of each ATM cal scan, and computes the ratio of channel zero to the median (or
minimum) of channels 1-3 (or otherwise specified). Ratios above the specified
threshold are indicated with asterisks, and mean that the digitizer thresholds need to be re-optimized by the staff.
Usage:
au.checkSamplers(vis, state_id=None, ac=None, spws=None, threshold1=1.25, threshold2=2.0, maxChannel=3, maxScan=None, useMedian=False)
- state_id: the state_id number to use for the sky subscan (default: row with REF=1,SIG=0)
- ac: the Atmcal instance to use (default=None which means create a new one)
- spws: the spws to consider (default=None which means use all spws)
- threshold1: if ratio is above this, then print one pair of asterisks
- threshold2: if ratio is above this, then print two pairs of asterisks
- maxChannel: adjust the upper bound of the block of channels to take the median of
- maxScan: the highest scan number to consider (default=None which means use all scans)
- useMedian: default=False, if True, then take the median of channels 1..maxChannel as the denominator of the ratio, otherwise take the mininum
Return values:
- dictionary containing the ratios, keyed by antenna name, then baseband number (1..4) with value = [XX,YY]
Example:
Antenna BB0pol0 BB0pol1 BB1pol0 BB1pol1 BB2pol0 BB2pol1 BB3pol0 BB3pol1
0=CM01 * 1.31* * 1.60* ** 2.44** ** 2.17** * 1.66* ** 2.23** * 1.73* * 1.29*
1=CM03 ** 2.09** ** 2.31** 1.19 * 1.42* ** 2.17** * 1.33* * 1.89* * 1.92*
2=CM04 1.09 * 1.90* 1.13 * 1.61* ** 3.24** * 1.53* * 1.40* 1.12
3=CM05 ** 2.08** 1.17 ** 2.83** 1.18 ** 2.08** * 1.71* ** 2.23** 0.98
4=CM06 * 1.90* 1.00 ** 4.43** 1.07 ** 2.60** 1.11 ** 2.45** 1.15
5=CM07 1.13 0.89 * 1.91* 0.79 * 1.56* 0.59 * 1.36* 0.81
6=CM08 1.13 * 1.37* * 1.71* 1.07 1.22 0.88 1.14 0.93
7=CM12 * 1.37* 1.05 ** 2.50** 1.17 ** 2.23** 1.09 * 1.55* 0.97
8=DA42 * 1.65* 0.98 ** 4.10** 1.05 * 1.92* * 1.27* ** 2.25** 1.18
9=DA46 * 1.58* 1.05 * 1.91* 1.07 * 1.97* 0.97 * 1.25* 1.16
10=DA47 0.96 0.93 1.20 * 1.88* * 1.29* 1.17 1.01 0.99
11=DA48 0.94 0.97 1.11 1.22 1.00 0.92 1.19 0.99
12=DA51 1.25 0.81 ** 3.19** 0.73 * 1.46* 0.52 1.00 0.80
13=DA52 ** 2.92** 1.00 ** 7.14** * 1.47* ** 4.43** * 1.32* ** 3.22** 1.04
14=DA53 * 1.87* ** 2.12** * 1.98* ** 2.94** 0.95 * 1.64* 0.94 ** 2.35**
15=DA54 * 1.44* 0.87 ** 3.24** * 1.34* ** 5.98** * 1.34* * 1.89* 0.91
16=DA55 1.19 1.21 ** 3.06** * 1.92* ** 2.22** 0.98 * 1.64* 0.94
17=DA56 * 1.47* 1.02 ** 2.89** * 1.30* ** 2.70** 1.05 * 1.77* 0.90
18=DV01 * 1.95* 0.97 ** 2.14** 1.02 ** 2.52** 0.97 * 1.78* 0.92
19=DV02 ** 2.30** * 1.32* ** 4.09** * 1.43* ** 2.00** 1.11 ** 2.08** 1.19
20=DV03 * 2.00* 1.20 ** 3.17** 1.23 ** 2.17** 1.01 ** 2.73** * 1.68*
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ToddHunter - 2013-10-17