June 2000 anneal report for program 8410.

There was an anneal of the CCD on June 28th, 2000, 27 days after the
previous anneal on June 1th, 2000. A homogeneous set of data was obtained
from proposal 8410:  The Continuing Monthly Anneal Monitor.

As expected the atypical pattern of last anneal period did not repeated this 
month. There is, however, some suggestion of a flattening of the mean rate of 
growth in the post-anneal number of hot pixels and in our estimate of the dark 
rate over the past few months. For the most part previous trends continue.


1) The number of post anneal hot pixels continue increasing consistent
   with the previously determined long term trends. There is, however, some 
   suggestion of a flattening.
 
   > 0.1 e/s: 14539 pixels on June 28
   > 1.0 e/s:  2972
   > 10. e/s:   329

   > 0.1 e/s: 14295 pixels on June 1
   > 1.0 e/s:  2988
   > 10. e/s:   315

   > 0.1 e/s: 14628 pixels on May 6
   > 1.0 e/s:  3004
   > 10. e/s:   324

   > 0.1 e/s: 14258 pixels on April 6
   > 1.0 e/s:  2936
   > 10. e/s:   318


2) The *raw* post-anneal dark countrate for this anneal is 0.0227 cts/pixel.
   This compares with 0.0225 cts/pixel in June 1th, 2000, and 0.018 cts/pixel in
   June 99. 
   
3) The iterated median count rate (after iterating up to 30 times by
   eliminating pixels +/- 5*sigma) is 0.00401, the same as last month.
   
4) The creation rates for hot pixels over this period were within the normal
   range

   > 0.1 e/s:  61.8 pixels/day in June 28 2000 
   > 1.0 e/s:   6.9
   > 10  e/s:   0.9

   > 0.1 e/s:  14.4 pixels/day in June 1 2000 
   > 1.0 e/s:   1.0
   > 10  e/s:   0.0

   > 0.1 e/s:  44.5 pixels/day in May 2000 
   > 1.0 e/s:   5.1
   > 10  e/s:   0.3
   
   > 0.1 e/s:  26.4 pixels/day in June 99
   > 1.0 e/s:   9.7
   > 10  e/s:   1.2

5) The rate at which new hot pixels annealed out  was within the normal range
   of fluctuations.

   > 0.1 e/s: 84.8% annealed away in the June 28 00 anneal.
   > 1.0 e/s: 108.9%
   > 10  e/s: 39.0%

   > 0.1 e/s: 192.2% annealed away in the June 1 00 anneal.
   > 1.0 e/s: 166.7%
   > 10  e/s: -800.0%

   > 0.1 e/s: 71.3% annealed away in the May 00 anneal.
   > 1.0 e/s: 53.7%
   > 10  e/s: 25.0%

   The usual plots are attached.