diff --git a/Detectors/CTP/macro/PlotPbLumi.C b/Detectors/CTP/macro/PlotPbLumi.C
index 4bda8d25e006e..1022b6e30d0be 100644
--- a/Detectors/CTP/macro/PlotPbLumi.C
+++ b/Detectors/CTP/macro/PlotPbLumi.C
@@ -35,7 +35,7 @@ using namespace o2::ctp;
 // qc = 0: takes scalers from CCDB (available only for finished runs) otherwise from QCCDB (available for active runs)
 // t0-tlast: window in seconds counted from beginning of run
 //
-void PlotPbLumi(int runNumber = 567905, bool sum = 0, bool qc = 0, Double_t t0 = 0., Double_t tlast = 0.)
+void PlotPbLumi(int runNumber = 572073, bool sum = 1, double cut = 0, bool qc = 0, Double_t t0 = 0., Double_t tlast = 0.)
 { //
   // PLots in one canvas
   // znc rate/28
@@ -173,14 +173,17 @@ void PlotPbLumi(int runNumber = 567905, bool sum = 0, bool qc = 0, Double_t t0 =
   Double_t* tcetoznc = tcetozncvec.data();
   Double_t* vchtoznc = vchtozncvec.data();
   for (int i = i0; i < ilast; i++) {
+    // for (int i = 30; i < 40; i++) {
+
     int iv = i - i0;
     x[iv] = (double_t)(recs[i + 1].intRecord.orbit + recs[i].intRecord.orbit) / 2. - orbit0;
     x[iv] *= 88e-6;
     // x[i] = (double_t)(recs[i+1].epochTime + recs[i].epochTime)/2.;
     double_t tt = (double_t)(recs[i + 1].intRecord.orbit - recs[i].intRecord.orbit);
     tt = tt * 88e-6;
+    // std::cout << i << " " << iv << " " << tt << std::endl;
     //
-    // std::cout << recs[i+1].scalersInps[25] << std::endl;
+    //  std::cout << recs[i+1].scalersInps[25] << std::endl;
     double_t znci = (double_t)(recs[i + 1].scalersInps[25] - recs[i].scalersInps[25]);
     double_t mu = -TMath::Log(1. - znci / tt / nbc / frev);
     double_t zncipp = mu * nbc * frev;
@@ -199,15 +202,27 @@ void PlotPbLumi(int runNumber = 567905, bool sum = 0, bool qc = 0, Double_t t0 =
     // std::cout << recs[i+1].scalers[tce].lmBefore << std::endl;
     had += recs[i + 1].scalers[tsc].lmBefore - recs[i].scalers[tsc].lmBefore;
     // rat = (double_t)(had)/double_t(recs[i+1].scalersInps[25] - recs[i].scalersInps[25])*28;
-    tcetsctoznc[iv] = (double_t)(had) / zncpp[iv] / tt;
+    if (zncpp[iv] > cut) {
+      tcetsctoznc[iv] = (double_t)(had) / zncpp[iv] / tt;
+    } else {
+      tcetsctoznc[iv] = 0.;
+    }
     had = recs[i + 1].scalers[tce].lmBefore - recs[i].scalers[tce].lmBefore;
     // rat = (double_t)(had)/double_t(recs[i+1].scalersInps[25] - recs[i].scalersInps[25])*28;
-    tcetoznc[iv] = (double_t)(had) / zncpp[iv] / tt;
+    if (zncpp[iv] > cut) {
+      tcetoznc[iv] = (double_t)(had) / zncpp[iv] / tt;
+    } else {
+      tcetoznc[iv] = 0.;
+    }
     had = recs[i + 1].scalers[vch].lmBefore - recs[i].scalers[vch].lmBefore;
     double_t muvch = -TMath::Log(1. - had / tt / nbc / frev);
 
     // rat = (double_t)(had)/double_t(recs[i+1].scalersInps[25] - recs[i].scalersInps[25])*28;
-    vchtoznc[iv] = (double_t)(had) / zncpp[iv] / tt;
+    if (zncpp[iv] > cut) {
+      vchtoznc[iv] = (double_t)(had) / zncpp[iv] / tt;
+    } else {
+      vchtoznc[iv] = 0.;
+    }
     // std::cout << "muzdc:" << mu << " mu tce:" << mutce << " muvch:" << muvch << std::endl;
   }
   //