Photometry Diagnostics for m31_u2ug02

Frame list, with derived and commanded shifts

dataset	filter	exptime	derived dx	derived dy	header dx	header dy	delta dx	delta dy
u2ug020at	F555W	160.00	0.00	0.00	0.00	0.00	0.00	0.00
u2ug020bt	F555W	500.00	0.00	0.05	0.00	0.00	0.00	0.05
u2ug020ct	F555W	500.00	-0.02	0.09	0.00	0.00	-0.02	0.09
u2ug020dt	F555W	500.00	-0.03	0.08	0.00	0.00	-0.03	0.08
u2ug020et	F555W	500.00	-0.02	0.04	0.00	0.00	-0.02	0.04
u2ug020ft	F555W	160.00	0.05	-0.04	0.00	0.00	0.05	-0.04
u2ug020gt	F555W	500.00	0.05	0.03	0.00	0.00	0.05	0.03
u2ug020ht	F555W	500.00	0.00	0.07	0.00	0.00	0.00	0.07
u2ug020it	F555W	500.00	-0.02	0.05	0.00	0.00	-0.02	0.05
u2ug020jt	F555W	500.00	-0.05	0.06	0.00	0.00	-0.05	0.06
u2ug0201t	F814W	160.00	0.28	0.04	0.00	0.00	0.28	0.04
u2ug0202t	F814W	500.00	0.26	0.10	0.00	0.00	0.26	0.10
u2ug0203t	F814W	500.00	0.25	0.11	0.00	0.00	0.25	0.11
u2ug0204t	F814W	500.00	0.23	0.08	0.00	0.00	0.23	0.08
u2ug0205t	F814W	400.00	0.27	-0.08	0.00	0.00	0.27	-0.08
u2ug0206t	F814W	500.00	0.23	0.02	0.00	0.00	0.23	0.02
u2ug0207t	F814W	500.00	0.19	0.04	0.00	0.00	0.19	0.04
u2ug0208t	F814W	500.00	0.14	0.05	0.00	0.00	0.14	0.05
u2ug0209t	F814W	500.00	-0.02	-0.05	0.00	0.00	-0.02	-0.05

Mosaic images

F555W	F814W

HSTPHOT command log

Color magnitude diagrams

	All chips	PC	WF2	WF3	WF4
PSF
Aperture

Error vs. magnitude diagrams

	All chips	PC	WF2	WF3	WF4
f555w
f814w

CHI vs. magnitude diagrams

	All chips	PC	WF2	WF3	WF4
f555w
f814w

Aperture corrections

Aperture corrections compared with those of entire database (green points are this field)
If aperture corrections appear to be significant outliers in the global trend, you should be cautious about their quality, and consider that the zeropoints of photometry and colors are more suspect