[Thu May  3 17:40:34 2012] Detection parameters:
  Position = (300.7, 280.0) = 0 25 33.54 64 6 8.9
  Extent = 10.9" x 10.9", rotation angle = 0 degrees
  Source counts = 15577.9 +/- 167.2
  Background counts = 423.7
  Rate = 0.7 +/- 0.008

[Thu May  3 17:40:54 2012] Off-axis axis estimate = 1.35'
[Thu May  3 18:07:41 2012] Using EEF radius (= 7.10 ")to estimate initial spatial extent for simple fitting
[Thu May  3 18:07:41 2012] Initial guess for spatial extent in simple fitting = 7.10"
[Thu May  3 18:07:41 2012] source mask rpix=1.6, npix_max = 18, mask sum = 16, frac = 0.879
[Thu May  3 18:07:41 2012] Giving source the simple spatial ID 42 for pass 0, mean size = 7.10"
[Sat May 12 14:11:39 2012] fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_src42.ximg exists
[Sat May 12 14:11:39 2012] fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_src42_1.ximg exists
[Sat May 12 14:11:39 2012] Fit fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_src42 appears to have run properly
[Sat May 12 14:11:42 2012] fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_tfrozen_src42.ximg exists
[Sat May 12 14:11:42 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_src42.csv
[Sat May 12 14:11:42 2012] fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_tfrozen_src42_1.ximg exists
[Sat May 12 14:11:42 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_src42.csv
[Sat May 12 14:11:42 2012] It looks like the fit did not converge
You should probably delete fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_tfrozen_src42_1.ximg
Either tweak this fit manually starting from fullrun_pn_xmm0511180101_pi300-10000_cl_pass0_tfrozen_src42.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