Index: /trunk/psphot/src/psphotEvalFLT.c
===================================================================
--- /trunk/psphot/src/psphotEvalFLT.c	(revision 15059)
+++ /trunk/psphot/src/psphotEvalFLT.c	(revision 15060)
@@ -32,5 +32,6 @@
 
     // if the object has a fitted peak below 0, the fit did not converge cleanly
-    if (model->params->data.F32[1] <= 0) {
+    // XXX this limit is fairly arbitrary, and must be > the value is the model limits
+    if (model->params->data.F32[PM_PAR_I0] <= 0.02) {
 	source->mode |= PM_SOURCE_MODE_FAIL;
 	return false;
Index: /trunk/psphot/src/psphotEvalPSF.c
===================================================================
--- /trunk/psphot/src/psphotEvalPSF.c	(revision 15059)
+++ /trunk/psphot/src/psphotEvalPSF.c	(revision 15060)
@@ -104,6 +104,7 @@
     } 
 
-    // if the object has a fitted peak below 0, the fit did not converge cleanly
-    if (model->params->data.F32[PM_PAR_I0] <= 0) {
+    // if the object has a fitted peak below 0.02, the source is not viable
+    // perhaps the fit did not converge cleanly
+    if (model->params->data.F32[PM_PAR_I0] <= 0.02) {
 	source->mode |= PM_SOURCE_MODE_FAIL;
 	if (source->mode & PM_SOURCE_MODE_SATSTAR) {