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CFHQSIR Elixir-IR Validation Statistics

Last update: Thu Nov 15 14:53:28 HST 2012


Global statistics since the start of the survey in August 2010:

CFHTLS Wide Patch: W1 W2 W3 W4
Total integration [validated exp.]: 63.0 hr 18.9 hr 25.7 hr 21.9 hr
Current completion of the patch : 102.9 % 88.9 % 61.7 % 103.0 %
Number of validated exposures: 2668 800 1089 927
Number of exposures needed : 2592 900 1764 900
Current fraction of CFHQSIR : 48.7 % 14.6 % 19.9 % 16.9 %
Target fraction of CFHQSIR : 42.0 % 15.0 % 28.0 % 15.0 %

  • Total validated integration: includes the 10 seconds overhead per exposure per QSO time accounting rules
  • Current completion of the patch: fraction from the number of validated exposures to the nominal number of exposures needed to cover the whole patch. If there are more than 4 validated exposures for certain WIRCam pointings, the final tally can go over 100%, refer to the maps color schemes to find out the actual coverage of all pointings with at least the 4 nominal exposures.
  • Number of validated exposures: number of images accounted for in the Elixir based validation
  • Number of exposures needed: nominal number of exposures needed to cover the whole patch
  • Current fraction of CFHQSIR: relative fraction of the various patches to illustrates the fields balancing
  • Target fraction of CFHQSIR: nominal relative fraction of the various patches for the complete survey

The following table presents glocal statistics per CFHTLS Wide field:

CFHTLS Done (%) Itime(hr) = itime(sec) x Nexp Med Avg Min Max Dsp A. Bkg. Ph.
W1 102.9 55.6 = 75 x 26680.62 0.63 0.40 0.96 0.081.2435.0096
W2 88.9 16.7 = 75 x 8000.59 0.60 0.42 0.84 0.091.2230.0093
W3 61.7 22.7 = 75 x 10890.65 0.65 0.49 0.86 0.071.3040.0092
W4 103.0 19.3 = 75 x 9270.62 0.62 0.40 0.87 0.091.1132.0092
  • 'Done' is the internal completion rate of the given CFHTLS Wide field
  • 'Itime' is the pure integration time not including the 10 seconds overhead
  • Image quality statistics: Median, Average, Minimum, Maximum, Dispersion
  • 'A.' is the average airmass for all exposures
  • 'Bkg.' is the average sky background in ADUs per second for all exposures
  • 'Ph.' is the fraction (percentage) of exposures taken under photometric conditions