Tighten sanity check a little in RichCKResolutionFitter.h

Rich/RichRecUtils/include/RichRecUtils/RichCKResolutionFitter.h

@@ -159,11 +159,13 @@ namespace Rich::Rec {
 
     public: // Fit Quality options
       /// Maximum abs fitted mean for OK fit
-      std::array<double, NRads> RichMaxMean{{0.006, 0.003}};
+      std::array<double, NRads> RichMaxMean{{0.0040, 0.0020}};
+      /// Minimum abs fitted sigma for OK fit
+      std::array<double, NRads> RichMinSigma{{0.0003, 0.0001}};
       /// Maximum abs fitted sigma for OK fit
-      std::array<double, NRads> RichMaxSigma{{0.010, 0.005}};
+      std::array<double, NRads> RichMaxSigma{{0.0030, 0.0020}};
       /// Maximum shift error for OK fit
-      std::array<double, NRads> MaxShiftError{{0.001, 0.001}};
+      std::array<double, NRads> MaxShiftError{{0.0010, 0.0010}};
       /// Maximum resolution error for OK fit
       std::array<double, NRads> MaxSigmaError{{0.0002, 0.0001}};
     };
@@ -245,8 +247,11 @@ namespace Rich::Rec {
       fitOK &= fFitF->GetParError( 2 ) < params().MaxSigmaError[rIn];
       // Final sanity check on the fit results to detect complete failures
       // such as when there is no Cherenkov signal at all
-      fitOK &= fabs( fFitF->GetParameter( 1 ) ) < params().RichMaxMean[rIn];
-      fitOK &= fabs( fFitF->GetParameter( 2 ) ) < params().RichMaxSigma[rIn];
+      const auto ckMean = fFitF->GetParameter( 1 );
+      const auto ckRes  = fFitF->GetParameter( 2 );
+      fitOK &= fabs( ckMean ) < params().RichMaxMean[rIn];
+      fitOK &= fabs( ckRes ) > params().RichMinSigma[rIn];
+      fitOK &= fabs( ckRes ) < params().RichMaxSigma[rIn];
       // return the final status
       return fitOK;
     }