[Thu May  3 17:40:28 2012] Detection parameters:
  Position = (367.9, 311.0) = 0 24 48.82 64 8 22.8
  Extent = 10.9" x 10.9", rotation angle = 0 degrees
  Source counts = 35179.2 +/- 229.3
  Background counts = 307.2
  Rate = 2 +/- 0.01

[Thu May  3 17:40:54 2012] Off-axis axis estimate = 5.12'
[Thu May  3 18:07:41 2012] Using EEF radius (= 8.99 ")to estimate initial spatial extent for simple fitting
[Thu May  3 18:07:41 2012] Initial guess for spatial extent in simple fitting = 8.99"
[Thu May  3 18:07:41 2012] source mask rpix=2.1, npix_max = 26, mask sum = 36, frac = 1.366
[Thu May  3 18:07:41 2012] Giving source the simple spatial ID 3 for pass 0, mean size = 8.99"
[Sat May 12 14:11:38 2012] fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_src3.ximg exists
[Sat May 12 14:11:38 2012] fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_src3_1.ximg exists
[Sat May 12 14:11:38 2012] Fit fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_src3 appears to have run properly
[Sat May 12 14:11:41 2012] fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_tfrozen_src3.ximg exists
[Sat May 12 14:11:41 2012] Warning: poor agreement between model and actual number of counts may be indicative of a poor fit in csv/fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_tfrozen_src3.csv
[Sat May 12 14:11:41 2012] fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_tfrozen_src3_1.ximg exists
[Sat May 12 14:11:41 2012] Warning: poor agreement between model and actual number of counts may be indicative of a poor fit in csv/fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_tfrozen_src3.csv
[Sat May 12 14:11:41 2012] It looks like the fit did not converge
You should probably delete fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_tfrozen_src3_1.ximg
Either tweak this fit manually starting from fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_tfrozen_src3.ximg or adjust the simplespatial fit parameters in $XASSIST/data/missions/*/*/spatial.dat and re-run simplespatial fitting after setting file recreation parameter to yes