add only meaningful states

cms-sw · Aug 31, 2022 · f3afc63 · f3afc63
1 parent 1701c24
commit f3afc63
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/TrackingTools/GsfTracking/src/GsfMultiStateUpdator.cc b/TrackingTools/GsfTracking/src/GsfMultiStateUpdator.cc
@@ -30,7 +30,10 @@ TrajectoryStateOnSurface GsfMultiStateUpdator::update(const TrajectoryStateOnSur
   int i = 0;
   for (auto const& tsosI : predictedComponents) {
     TrajectoryStateOnSurface updatedTSOS = KFUpdator().update(tsosI, aRecHit);
-    if (updatedTSOS.isValid() && updatedTSOS.localError().valid()) {
+
+    double det = 0;
+    if (updatedTSOS.isValid() && updatedTSOS.localError().valid() && updatedTSOS.localError().posDef() &&
+        (updatedTSOS.curvilinearError().matrix().Det2(det)) && det > 0) {
       result.addState(TrajectoryStateOnSurface(weights[i],
                                                updatedTSOS.localParameters(),
                                                updatedTSOS.localError(),