diff --git a/.vscode/settings.json b/.vscode/settings.json
index 37544d7..15a1c4b 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -156,6 +156,7 @@
     "qrandomgenerator": "cpp",
     "source_location": "cpp",
     "splitpole.C": "cpp",
-    "forward_list": "cpp"
+    "forward_list": "cpp",
+    "fstream": "cpp"
   }
 }
\ No newline at end of file
diff --git a/FSUDAQ.cpp b/FSUDAQ.cpp
index 3068dd3..93ec271 100644
--- a/FSUDAQ.cpp
+++ b/FSUDAQ.cpp
@@ -894,13 +894,18 @@ void MainWindow::UpdateScalar(){
     // digi[iDigi]->GetData()->PrintAllData(true, 10);
     if( chkSaveData->isChecked() ) totalFileSize += digi[iDigi]->GetData()->GetTotalFileSize();
     for( int i = 0; i < digi[iDigi]->GetNChannels(); i++){
+      QString a = "";
+      QString b = "";
+      
       if( digi[iDigi]->GetChannelOnOff(i) == true ) {
         //printf(" %3d %2d | %7.2f %7.2f \n", digi[iDigi]->GetSerialNumber(), i, digi[iDigi]->GetData()->TriggerRate[i], digi[iDigi]->GetData()->NonPileUpRate[i]);
-        leTrigger[iDigi][i]->setText(QString::number(digi[iDigi]->GetData()->TriggerRate[i], 'f', 2));
-        leAccept[iDigi][i]->setText(QString::number(digi[iDigi]->GetData()->NonPileUpRate[i], 'f', 2));
+        QString a = QString::number(digi[iDigi]->GetData()->TriggerRate[i], 'f', 2);
+        QString b = QString::number(digi[iDigi]->GetData()->NonPileUpRate[i], 'f', 2);
+        leTrigger[iDigi][i]->setText(a);
+        leAccept[iDigi][i]->setText(b);
 
-        if( influx ){
-          influx->AddDataPoint("Rate,Bd="+std::to_string(digi[iDigi]->GetSerialNumber()) + ",Ch=" + QString::number(i).rightJustified(2, '0').toStdString() + " value=" +  QString::number(digi[iDigi]->GetData()->TriggerRate[i], 'f', 2).toStdString());
+        if( influx && a != "inf" ){
+          influx->AddDataPoint("Rate,Bd="+std::to_string(digi[iDigi]->GetSerialNumber()) + ",Ch=" + QString::number(i).rightJustified(2, '0').toStdString() + " value=" +  a.toStdString());
         }
       }
     }
@@ -979,7 +984,7 @@ void MainWindow::StartACQ(){
   if( onlineAnalyzer ) onlineAnalyzer->StartThread();
 
   {//^=== elog and database
-    if( influx ){
+    if( influx && chkSaveData->isChecked() ){
       influx->AddDataPoint("RunID value=" + std::to_string(runID));
       influx->AddDataPoint("SavingData,ExpName=" +  elogName.toStdString() + " value=1");
       influx->WriteData(dataBaseName.toStdString());
@@ -1033,10 +1038,11 @@ void MainWindow::StopACQ(){
 
   if( onlineAnalyzer ) onlineAnalyzer->StopThread();
 
-  if( histThread->isRunning()){
+  if( canvas && histThread->isRunning()){
     histThread->Stop();
     histThread->quit();
     histThread->wait();
+    canvas->ClearInternalDataCount();
   }
   
   lbScalarACQStatus->setText("<font style=\"color: red;\"><b>ACQ Off</b></font>");
@@ -1049,7 +1055,7 @@ void MainWindow::StopACQ(){
   cbAutoRun->setEnabled(true);
 
   {//^=== elog and database
-    if( influx ){
+    if( influx && chkSaveData->isChecked() ){
       influx->AddDataPoint("SavingData,ExpName=" +  elogName.toStdString() + " value=0");
       influx->WriteData(dataBaseName.toStdString());
       influx->ClearDataPointsBuffer();
@@ -1356,6 +1362,7 @@ void MainWindow::OpenScope(){
             histThread->Stop();
             histThread->quit();
             histThread->wait();
+            canvas->ClearInternalDataCount();
           }
         }
       }
diff --git a/Histogram1D.h b/Histogram1D.h
index da2cd6e..f33e88c 100644
--- a/Histogram1D.h
+++ b/Histogram1D.h
@@ -210,6 +210,9 @@ public:
     txt[0]->setText("Under Flow : 0");
     txt[1]->setText("Total Entry : 0");
     txt[2]->setText("Over Flow : 0");
+    totalEntry = 0;
+    underFlow = 0;
+    overFlow = 0;
     UpdatePlot();
   }
 
diff --git a/README.md b/README.md
index 5d5b010..6daa7fe 100644
--- a/README.md
+++ b/README.md
@@ -96,4 +96,8 @@ The following files must be excluded from the *.pro, as they are not related to
 
 Those file can be compiled using 
 
-`make -f Makefile_test`
\ No newline at end of file
+`make -f Makefile_test`
+
+# Known Bugs
+
+* for PHA firmware, when the peak average changed, trace disapear and causing program lag.
diff --git a/SingleSpectra.cpp b/SingleSpectra.cpp
index deffa13..b40a98a 100644
--- a/SingleSpectra.cpp
+++ b/SingleSpectra.cpp
@@ -44,6 +44,8 @@ SingleSpectra::SingleSpectra(Digitizer ** digi, unsigned int nDigi, QString rawD
       for( unsigned int i = 0; i < nDigi; i++){
         for( int j = 0; j < MaxNChannels; j++){
           if( hist[i][j] ) hist[i][j]->Clear();
+          lastFilledIndex[i][j] = -1;
+          loopFilledIndex[i][j] = 0;
         }
       }
     });
@@ -85,13 +87,8 @@ SingleSpectra::SingleSpectra(Digitizer ** digi, unsigned int nDigi, QString rawD
   layout->setStretch(0, 1);
   layout->setStretch(1, 6);
 
+  ClearInternalDataCount();
 
-  for( unsigned int i = 0; i < nDigi; i++){
-    for( int ch = 0; ch < MaxNChannels ; ch++) {
-      lastFilledIndex[i][ch] = -1;
-      loopFilledIndex[i][ch] = 0;
-    }
-  }
   oldBd = -1;
   oldCh = -1;
 
@@ -108,6 +105,15 @@ SingleSpectra::~SingleSpectra(){
   }
 }
 
+void SingleSpectra::ClearInternalDataCount(){
+  for( unsigned int i = 0; i < nDigi; i++){
+    for( int ch = 0; ch < MaxNChannels ; ch++) {
+      lastFilledIndex[i][ch] = -1;
+      loopFilledIndex[i][ch] = 0;
+    }
+  }
+}
+
 void SingleSpectra::ChangeHistView(){
 
   if( oldCh >= 0 ) {
@@ -136,7 +142,7 @@ void SingleSpectra::FillHistograms(){
       int temp1 = lastIndex + loopIndex*MaxNData;
       int temp2 = lastFilledIndex[i][ch] + loopFilledIndex[i][ch]*MaxNData;
 
-      //printf("%d |%d   %d \n", ch, temp2, temp1);
+      // printf("%d |%d   %d \n", ch, temp2, temp1);
       if( lastIndex < 0 ) continue;
 
       if( temp1 <= temp2 ) continue;
diff --git a/SingleSpectra.h b/SingleSpectra.h
index 02b3e86..95fec55 100644
--- a/SingleSpectra.h
+++ b/SingleSpectra.h
@@ -27,6 +27,7 @@ public:
   SingleSpectra(Digitizer ** digi, unsigned int nDigi, QString rawDataPath, QMainWindow * parent = nullptr);
   ~SingleSpectra();
 
+  void ClearInternalDataCount();
   void SetFillHistograms(bool onOff) { fillHistograms = onOff;}
   bool IsFillHistograms() const {return fillHistograms;}
 
diff --git a/influxdb.cpp b/influxdb.cpp
index afb8747..7a22f42 100644
--- a/influxdb.cpp
+++ b/influxdb.cpp
@@ -152,6 +152,6 @@ void InfluxDB::Execute(){
 }
 
 size_t InfluxDB::WriteCallBack(char *contents, size_t size, size_t nmemb, void *userp){
-    ((std::string*)userp)->append((char*)contents, size * nmemb);
-    return size * nmemb;
+  ((std::string*)userp)->append((char*)contents, size * nmemb);
+  return size * nmemb;
 }