Additional protection

diff --git a/ITS/AliITSClusterFinderV2SSD.cxx b/ITS/AliITSClusterFinderV2SSD.cxx
index 484106a160bafe969c7b295b14fd2ca6a5bf5398..6bf83e5c5eab0e79b3c37402586435e2124c5452 100644 (file)
--- a/ITS/AliITSClusterFinderV2SSD.cxx
+++ b/ITS/AliITSClusterFinderV2SSD.cxx
@@ -399,14 +399,16 @@ void AliITSClusterFinderV2SSD::FindClustersSSD(AliITSRawStreamSSD* input,
              
              //Split suspiciously big cluster
              if (nDigits > 4&&nDigits < 25) {
-               cluster.SetY(y/q - 0.25*nDigits);
+               if(q!=0) cluster.SetY(y/q - 0.25*nDigits);
+               else cluster.SetY(istrip-1 - 0.25*nDigits);
                cluster.SetQ(0.5*q);
                if (nClusters[0] == kMax) {
                  Error("FindClustersSSD", "Too many 1D clusters !");
                  return;
                }
                Ali1Dcluster& cluster2 = clusters1D[0][nClusters[0]++];
-               cluster2.SetY(y/q + 0.25*nDigits);
+               if(q!=0) cluster2.SetY(y/q + 0.25*nDigits);
+               else cluster2.SetY(istrip-1 + 0.25*nDigits);
                cluster2.SetQ(0.5*q);
                cluster2.SetNd(nDigits);
                cluster2.SetLabels(lab);
@@ -439,14 +441,16 @@ void AliITSClusterFinderV2SSD::FindClustersSSD(AliITSRawStreamSSD* input,
            
            //Split suspiciously big cluster
            if (nDigits > 4&&nDigits < 25) {
-             cluster.SetY(y/q - 0.25*nDigits);
+             if(q!=0) cluster.SetY(y/q - 0.25*nDigits);
+             else cluster.SetY(istrip-1 - 0.25*nDigits);
              cluster.SetQ(0.5*q);
              if (nClusters[0] == kMax) {
                Error("FindClustersSSD", "Too many 1D clusters !");
                return;
              }
              Ali1Dcluster& cluster2 = clusters1D[0][nClusters[0]++];
-             cluster2.SetY(y/q + 0.25*nDigits);
+             if(q!=0) cluster2.SetY(y/q + 0.25*nDigits);
+             else cluster2.SetY(istrip-1 + 0.25*nDigits);
              cluster2.SetQ(0.5*q);
              cluster2.SetNd(nDigits);
              cluster2.SetLabels(lab);
@@ -562,14 +566,16 @@ void AliITSClusterFinderV2SSD::FindClustersSSD(AliITSRawStreamSSD* input,
            
            //Split suspiciously big cluster
            if (nDigits > 4&&nDigits < 25) {
-             cluster.SetY(y/q - 0.25*nDigits);
+             if(q!=0) cluster.SetY(y/q - 0.25*nDigits);
+             else cluster.SetY(strip+1 - 0.25*nDigits);
              cluster.SetQ(0.5*q);
              if (nClusters[1] == kMax) {
                Error("FindClustersSSD", "Too many 1D clusters !");
                return;
              }
              Ali1Dcluster& cluster2 = clusters1D[1][nClusters[1]++];
-             cluster2.SetY(y/q + 0.25*nDigits);
+             if(q!=0) cluster2.SetY(y/q + 0.25*nDigits);
+             else cluster2.SetY(strip+1 + 0.25*nDigits);
              cluster2.SetQ(0.5*q);
              cluster2.SetNd(nDigits);
              cluster2.SetLabels(lab);