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CFHTLS Validated Exposures Statistics

Last update: Fri Sep 5 17:36:57 HST 2008

Global statistics since the official start (*) of the survey on May 30th 2003 UT
(May 29th PM HST, odometer number >= 703900).
The global statistics include the 40 sec. overhead time per exposure
following QSO time accounting rules (blue framed table).

* moment when the integration time spent on the CFHTLS started to be accounted for
as the instrumental configuration became stable (improved image quality, guiding, full mosaic)

Survey Component :	Deep	Wide	Very Wide	Pre-Survey
Total integration [validated exp.]:	1146.7 hr	846.2 hr	252.8 hr	48.4 hr
Number of validated exposures:	10000	5483	5431	792
Current fraction of CFHTLS :	51.1 %	37.7 %	11.3 %	n/a
Target fraction of CFHTLS :	44.0 %	34.0 %	22.0 %	n/a

Note: the Pre-Survey is included in the Wide component for the computation of these global ratios.

Deep Survey

Filter	u	g	r	i	z
Target Ratio (%)	10	10	20	40	20

Deep D1	Ratio (%)	Itime(hr) = itime(sec) x Nexp	Med Avg Min Max Dsp	A.	Bkg.	Ph.
u	8.7	24.4 = 660 x 133	0.94 0.93 0.66 1.25 0.14	1.15	0.39	96
g	10.9	30.6 = 225 x 489	0.87 0.87 0.55 1.36 0.15	1.17	2.03	82
r	20.9	58.8 = 300 x 706	0.79 0.81 0.48 1.32 0.16	1.19	3.16	78
i	35.7	100.5 = 520 x 695	0.74 0.77 0.40 1.56 0.17	1.19	5.50	80
z	23.8	67.0 = 360 x 669	0.76 0.78 0.46 1.72 0.17	1.20	5.91	84

Deep D2	Ratio (%)	Itime(hr) = itime(sec) x Nexp	Med Avg Min Max Dsp	A.	Bkg.	Ph.
u	0.7	1.5 = 660 x 8	0.81 0.82 0.74 1.06 0.09	1.07	0.28	87
g	12.0	26.2 = 225 x 420	0.88 0.90 0.55 1.63 0.19	1.15	1.97	79
r	21.2	46.6 = 300 x 559	0.79 0.83 0.47 1.51 0.19	1.15	2.79	78
i	43.0	94.5 = 520 x 654	0.76 0.80 0.43 1.79 0.21	1.19	5.06	79
z	23.1	50.7 = 360 x 507	0.75 0.79 0.43 1.54 0.20	1.15	5.23	74

Deep D3	Ratio (%)	Itime(hr) = itime(sec) x Nexp	Med Avg Min Max Dsp	A.	Bkg.	Ph.
u	8.9	24.8 = 660 x 135	0.92 0.93 0.70 1.29 0.11	1.24	0.32	82
g	10.6	29.3 = 225 x 469	0.88 0.90 0.53 1.40 0.17	1.28	1.57	71
r	18.7	51.8 = 300 x 622	0.80 0.82 0.47 1.31 0.16	1.28	2.31	73
i	39.4	109.5 = 520 x 757	0.76 0.80 0.43 1.42 0.19	1.28	4.67	76
z	22.5	62.5 = 360 x 625	0.75 0.76 0.41 1.49 0.18	1.29	6.32	69

Deep D4	Ratio (%)	Itime(hr) = itime(sec) x Nexp	Med Avg Min Max Dsp	A.	Bkg.	Ph.
u	9.7	25.3 = 660 x 138	0.96 0.94 0.62 1.28 0.11	1.28	0.44	91
g	11.7	30.5 = 225 x 488	0.88 0.90 0.53 1.35 0.14	1.32	2.37	80
r	21.1	55.1 = 300 x 661	0.79 0.81 0.49 1.46 0.15	1.32	3.42	76
i	34.6	90.6 = 520 x 626	0.75 0.79 0.44 1.68 0.18	1.34	6.36	68
z	23.0	60.1 = 360 x 601	0.75 0.76 0.44 1.41 0.15	1.32	7.08	81

Wide Survey

Filter	u	g	r	i	z
Target Ratio (%)	27	11	9	19	33

Wide W1	Ratio (%)	Itime(hr) = itime(sec) x Nexp	Med Avg Min Max Dsp	A.	Bkg.	Ph.
u	15.3	42.7 = 600 x 255	0.89 0.89 0.59 1.25 0.14	1.15	0.33	79
g	19.2	53.5 = 500 x 385	0.82 0.82 0.58 1.32 0.12	1.20	1.88	66
r	13.0	36.2 = 180 x 724	0.78 0.79 0.50 1.28 0.12	1.21	3.46	74
i	31.5	87.9 = 615 x 514	0.69 0.70 0.44 1.10 0.12	1.21	5.48	73
z	21.0	58.7 = 600 x 351	0.76 0.77 0.45 1.14 0.13	1.21	6.08	79

Wide W2	Ratio (%)	Itime(hr) = itime(sec) x Nexp	Med Avg Min Max Dsp	A.	Bkg.	Ph.
u	15.4	21.3 = 600 x 128	0.95 0.95 0.71 1.32 0.13	1.12	0.29	95
g	16.7	23.1 = 500 x 166	0.84 0.83 0.53 1.10 0.10	1.21	1.76	83
r	18.9	26.1 = 180 x 522	0.80 0.79 0.46 1.20 0.14	1.22	4.72	95
i	30.1	41.7 = 615 x 244	0.67 0.68 0.46 0.99 0.10	1.17	5.02	90
z	18.9	26.2 = 600 x 157	0.75 0.76 0.44 1.08 0.11	1.17	5.46	96

Wide W3	Ratio (%)	Itime(hr) = itime(sec) x Nexp	Med Avg Min Max Dsp	A.	Bkg.	Ph.
u	17.7	42.7 = 600 x 256	0.90 0.90 0.63 1.24 0.13	1.23	0.33	94
g	14.4	34.7 = 500 x 250	0.86 0.86 0.60 1.25 0.11	1.28	1.68	86
r	16.9	40.9 = 180 x 817	0.82 0.83 0.53 1.40 0.13	1.32	4.34	82
i	29.8	72.0 = 615 x 421	0.71 0.71 0.48 1.16 0.12	1.27	6.15	81
z	21.2	51.2 = 600 x 307	0.70 0.72 0.49 1.14 0.12	1.31	5.83	76

Wide W4	Ratio (%)	Itime(hr) = itime(sec) x Nexp	Med Avg Min Max Dsp	A.	Bkg.	Ph.
u	17.0	21.5 = 600 x 129	0.89 0.88 0.59 1.30 0.13	1.10	0.30	96
g	16.1	20.4 = 500 x 147	0.80 0.80 0.55 1.02 0.09	1.20	1.80	93
r	16.2	20.4 = 180 x 408	0.69 0.70 0.42 1.18 0.15	1.27	4.02	94
i	28.5	36.0 = 615 x 211	0.64 0.65 0.43 0.96 0.11	1.20	5.22	89
z	22.3	28.2 = 600 x 169	0.69 0.69 0.44 1.02 0.12	1.21	6.23	88

Very Wide Survey

All Fields	Ratio (%)	Itime(hr) = itime(sec) x Nexp	Med Avg Min Max Dsp	A.	Bkg.	Ph.
g	24.3	46.7 = 90 x 1866	0.88 0.90 0.50 2.01 0.16	1.24	2.61	90
r	39.2	75.4 = 110 x 2466	0.79 0.80 0.45 1.47 0.16	1.25	3.47	89
i	36.6	70.4 = 180 x 1408	0.76 0.80 0.38 1.76 0.20	1.29	6.09	89