PSP QA for run 1893, rerun 0

QA produced on Tue Feb 20 11:39:27 CST 2001 with photo version v5_2_14

	Field Quality (nFields=114)
quality	nOK	nHOLE	% HOLE
union	111	3	2.6
col. 1	114	0	0.0
col. 2	114	0	0.0
col. 3	114	0	0.0
col. 4	114	0	0.0
col. 5	113	1	0.9
col. 6	112	2	1.8

PSP status plot

PSF width (FWHM arcsec) statistics for column 6, filter r:
Mean PSF width = 1.84
Median = 1.84, min = 1.61, max = 2.05
There are 0 fields ( 0.0%) with PSFwidth > 4.0 arcsec
This run is 114 fields long.
PSF width plot for all 30 chips
PSF width derivative plot for all 30 chips

	Mean PSP status (0=OK)
band	u	g	r	i	z
col. 1	0.04	0.00	0.00	0.00	0.00
col. 2	0.06	0.00	0.00	0.00	0.00
col. 3	0.04	0.00	0.00	0.00	0.01
col. 4	0.03	0.00	0.00	0.00	0.00
col. 5	0.00	0.00	0.01	0.00	0.00
col. 6	0.04	0.00	0.00	0.00	0.00

PSP status plot

	Mean N stars for estimating PSF
band	u	g	r	i	z
col. 1	26.3	34.4	34.1	33.7	34.8
col. 2	27.0	36.5	34.4	34.6	35.5
col. 3	26.7	35.5	34.3	34.4	35.8
col. 4	26.6	35.5	34.5	33.3	35.3
col. 5	27.6	37.5	33.9	37.2	37.2
col. 6	23.7	35.0	32.6	30.5	35.3

Number of stars used for estimating PSF

	Mean m(psf)-m(aperture) Error (mag)
band	u	g	r	i	z
col. 1	0.02	0.01	0.01	0.01	0.02
col. 2	0.02	0.02	0.02	0.01	0.02
col. 3	0.02	0.02	0.01	0.02	0.02
col. 4	0.02	0.02	0.01	0.01	0.02
col. 5	0.02	0.02	0.01	0.01	0.01
col. 6	0.02	0.01	0.01	0.01	0.02

Aperture Correction Scatter plot
Aperture Correction Bias plot
Wing Aperture Correction plot
Power-law index for the outer PSF
Kolmogoroff exponents

*Averaged over 6 columns

	Sky brightness* (mag/arsec2)
band	u	g	r	i	z
mean	22.29	21.94	20.74	19.90	18.61
max	22.32	21.96	20.77	19.97	18.70
min	22.23	21.86	20.69	19.80	18.49

Sky brightness (in counts) plot
Sky brightness (in mag/arcsec2) plot
Sky derivative plot
Sky colors plot

	Mean Sky Column offsets
band	u	g	r	i	z
col. 1	-0.02	-0.02	-0.01	-0.01	0.01
col. 2	-0.04	0.01	-0.01	-0.03	-0.07
col. 3	0.01	-0.00	-0.02	-0.00	0.00
col. 4	0.02	-0.01	0.01	-0.00	-0.02
col. 5	0.03	0.01	0.02	0.02	0.04
col. 6	-0.00	0.01	0.01	0.02	0.04

	Gains (from sky quartiles)
band	u	g	r	i	z
col. 1	1.04	1.02	1.06	0.90	0.95
col. 2	1.26	1.02	0.94	0.98	0.90
col. 3	1.07	0.97	1.09	0.89	0.95
col. 4	1.13	0.97	0.91	0.95	0.90
col. 5	1.17	0.90	1.10	1.03	0.95
col. 6	1.13	0.99	0.93	0.90	0.98

Gain plot
Normalized Gain plot