Comparison of Band 1 images with Saturated stars:
IRAC.1.0000000001.0002.0000.10.mipl.pps.fits

There are 3 saturated stars in the image (these 3 stars
are excluded from the statistics below).  Saturated stars
will be preprocessed from the image before DAOPHOT is run.

Unsaturated stars:
The truth image has   91 stars brighter than 13.0th mag
The truth image has  165 stars brighter than 13.5th mag
The truth image has  283 stars brighter than 14.0th mag
The truth image has  493 stars brighter than 14.5th mag
The truth image has  802 stars brighter than 15.0th mag
The truth image has 1221 stars brighter than 15.5th mag
The truth image has 5520 stars fainter  than 15.5th mag

DAOPHOT found 1957 stars in the image.

The image is 256 X 256 pixels but the analysis was done
excluding the outermost row and col of pixels.

NOTE:
When comparing the DAOPHOT list with the truth list a match
was defined by a larger 1.5 pixel radius do to the inaccuracy
of the truth list positions produced by Ashby's conversion of
spatial coordinates.

Finally a listing of completeness and reliability.

image 1
      # of *'s  matched *'s            # of false
Mag   in truth  by DAOPHOT  %Complete    stars     %Reliability
----  --------  ----------  ---------  ----------  ------------
13.0    91         91         100.0%      1          98.9%
13.5   165        164          99.4%      1          99.4%
14.0   283        281          99.3%      2          99.3%
14.5   493        486          98.6%     13          97.4%
15.0   802        779          97.1%     21          97.4%
15.5  1221       1175          96.2%     28          97.7%

Typical errors are less than 0.2 magnitudes for stars less than 15.5 magnitude.

NOTE:
Since the truth list extends down to 20th magnitude, and DAOPHOT
cannot detect stars that faint, when multiple truth image stars fall
within the 1.5 pixel radius of a detected DAOPHOT source, all flux of
all stars within that radius are coadded and compared to the
detected source.  On occasion there may also be more than one DAOPHOT
detected source within the 1.5 pixel radius, those detected sources were
also coadded.  For completeness any DAOPHOT source within 1.5
pixels of the truth image star was considered a match.  For reliability
false stars were defined as stars only in the DAOPHOT list which had
no truth image star within a 1.5 pixel radius, or in cases were
DAOPHOT produced multiple stars within a 1.5 pixel radius and the
matched truth images stars totalled less than the DAOPHOT number of
stars.  If the truth image had multiple stars within the 1.5 pixel radius
of a single DAOPHOT star, the match is considered reliable, the stars in
the truth image are simply considered unresolvable.