Photometry Diagnostics for m31_u28303


Frame list, with derived and commanded shifts
dataset filter exptime derived dx derived dy header dx header dy delta dx delta dy
u2830303t F555W 1000.00 0.00 0.00 0.00 0.00 0.00 0.00
u2830304t F555W 1000.00 0.01 -0.05 0.00 0.00 0.01 -0.05
u2830301t F814W 1000.00 0.03 -0.02 0.00 0.00 0.03 -0.02
u2830302t F814W 1000.00 0.05 -0.06 0.00 0.00 0.05 -0.06

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
F555W F814W

Aperture correction for each frame/chip, showing individual stars
All chips
PC
WF2
WF3
WF4
f555w
f814w

PSF vs. aperture photometry

All chips
PC
WF2
WF3
WF4
f555w
f814w

Artificial star diagrams


Completeness as a function of input magnitude
PSF photometry Aperture photometry

Recovered mag-input mag as a function of input mag (PSF photometry)
All chips
PC
WF2
WF3
WF4
f555w
f814w

Average recovered magnitude as function of location in CMD (PSF photometry)
All chips
PC
WF2
WF3
WF4