diff --git a/Detectors/TPC/calibration/include/TPCCalibration/CalibdEdx.h b/Detectors/TPC/calibration/include/TPCCalibration/CalibdEdx.h
index b40daa7b6e61f..20e470702a89a 100644
--- a/Detectors/TPC/calibration/include/TPCCalibration/CalibdEdx.h
+++ b/Detectors/TPC/calibration/include/TPCCalibration/CalibdEdx.h
@@ -121,6 +121,8 @@ class CalibdEdx
   }
   void fill(const TFIDInfo& tfid, const std::vector<TrackTPC>& tracks) { fill(tfid, gsl::span(tracks)); }
 
+  const TFIDInfo& getTFID() const { return mTFID; }
+
   /// Add counts from another container.
   void merge(const CalibdEdx* other);
 
@@ -174,10 +176,10 @@ class CalibdEdx
   constexpr static float recoverTgl(float scaledTgl, GEMstack rocType) { return scaledTgl * conf_dedx_corr::TglScale[rocType]; }
 
   /// dump this object to a file - the boost histogram is converted to a ROOT histogram -
-  void dumpToFile(const char* outFile, const char* outName) const;
+  void dumpToFile(const char* outFile);
 
   /// read the object from a file
-  static CalibdEdx readFromFile(const char* inFile, const char* inName);
+  static CalibdEdx readFromFile(const char* inFile);
 
   /// set lower and upper range in units of sigma which are used for the gaussian fits
   /// \param lowerSigma low sigma range
diff --git a/Detectors/TPC/calibration/src/CalibdEdx.cxx b/Detectors/TPC/calibration/src/CalibdEdx.cxx
index 2e20eacb94324..e1081335c04cb 100644
--- a/Detectors/TPC/calibration/src/CalibdEdx.cxx
+++ b/Detectors/TPC/calibration/src/CalibdEdx.cxx
@@ -744,18 +744,18 @@ void CalibdEdx::finalizeDebugOutput() const
   }
 }
 
-void CalibdEdx::dumpToFile(const char* outFile, const char* outName) const
+void CalibdEdx::dumpToFile(const char* outFile)
 {
   TFile f(outFile, "RECREATE");
-  f.WriteObject(this, outName);
+  f.WriteObject(this, "calib");
   const auto* thn = getRootHist();
   f.WriteObject(thn, "histogram_data");
 }
 
-CalibdEdx CalibdEdx::readFromFile(const char* inFile, const char* inName)
+CalibdEdx CalibdEdx::readFromFile(const char* inFile)
 {
   TFile f(inFile, "READ");
-  auto* obj = (CalibdEdx*)f.Get(inName);
+  auto* obj = (CalibdEdx*)f.Get("calib");
   if (!obj) {
     CalibdEdx calTmp;
     return calTmp;
diff --git a/Detectors/TPC/calibration/src/CalibratordEdx.cxx b/Detectors/TPC/calibration/src/CalibratordEdx.cxx
index 7599e2f5d4472..bd61ca2ec6b1d 100644
--- a/Detectors/TPC/calibration/src/CalibratordEdx.cxx
+++ b/Detectors/TPC/calibration/src/CalibratordEdx.cxx
@@ -44,10 +44,11 @@ void CalibratordEdx::finalizeSlot(Slot& slot)
   container->finalizeDebugOutput();
   mCalibs.push_back(container->getCalib());
 
-  TFType startTF = slot.getTFStart();
-  TFType endTF = slot.getTFEnd();
-  auto startTime = slot.getStartTimeMS();
-  auto endTime = slot.getEndTimeMS();
+  const TFType startTF = slot.getTFStart();
+  const TFType endTF = slot.getTFEnd();
+  const auto startTime = slot.getStartTimeMS();
+  const auto endTime = slot.getEndTimeMS();
+  const auto runNumber = container->getTFID().runNumber;
 
   mTFIntervals.emplace_back(startTF, endTF);
   mTimeIntervals.emplace_back(startTime, endTime);
@@ -56,6 +57,7 @@ void CalibratordEdx::finalizeSlot(Slot& slot)
     LOGP(info, "Dumping time slot data to file");
     auto calibCopy = container->getCalib();
     *mDebugOutputStreamer << "CalibdEdx"
+                          << "runNumber=" << runNumber
                           << "startTF=" << startTF      // Initial time frame ID of time slot
                           << "endTF=" << endTF          // Final time frame ID of time slot
                           << "startTime=" << startTime  // Initial time frame time of time slot
@@ -65,17 +67,15 @@ void CalibratordEdx::finalizeSlot(Slot& slot)
   }
 
   if (mDumpHistograms) {
-    const auto fileName = fmt::format("o2tpc_CalibratordEdx_Histos_{}_{}_{}_{}.root", startTime, endTime, startTF, endTF);
     const auto dumpTHn = (mDumpHistograms & 0x1) == 0x1;
     const auto dumpTree = (mDumpHistograms & 0x2) == 0x2;
     if (dumpTree) {
-      container->writeTTree(fileName);
+      const auto fileNameTree = fmt::format("o2tpc_CalibratordEdx_Tree_{}_{}_{}_{}_{}.root", runNumber, startTime, endTime, startTF, endTF);
+      container->writeTTree(fileNameTree);
     }
     if (dumpTHn) {
-      auto f = std::make_unique<TFile>(fileName.data(), dumpTree ? "update" : "recreate");
-      auto hn = container->getRootHist();
-      hn->Write("calibHist");
-      f->Close();
+      const auto fileName = fmt::format("o2tpc_CalibratordEdx_Histos_{}_{}_{}_{}_{}.root", runNumber, startTime, endTime, startTF, endTF);
+      container->dumpToFile(fileName.data());
     }
   }
 }
diff --git a/Detectors/TPC/workflow/src/CalibdEdxSpec.cxx b/Detectors/TPC/workflow/src/CalibdEdxSpec.cxx
index 2eaf6125e6c29..5cf412f227d78 100644
--- a/Detectors/TPC/workflow/src/CalibdEdxSpec.cxx
+++ b/Detectors/TPC/workflow/src/CalibdEdxSpec.cxx
@@ -82,7 +82,12 @@ class CalibdEdxDevice : public Task
       if (!fdEdxCustom || !fdEdxCustom->IsOpen() || fdEdxCustom->IsZombie()) {
         LOGP(error, "Could not open custom TimeGain file {}", mCustomdEdxFileName);
       } else {
-        const auto timeGain = fdEdxCustom->Get<o2::tpc::CalibdEdxCorrection>("CalibdEdxCorrection");
+        auto timeGain = fdEdxCustom->Get<o2::tpc::CalibdEdxCorrection>("CalibdEdxCorrection");
+
+        if (!timeGain) {
+          timeGain = fdEdxCustom->Get<o2::tpc::CalibdEdxCorrection>("ccdb_object");
+        }
+
         if (!timeGain) {
           LOGP(error, "Could not load 'CalibdEdxCorrection' from file {}", mCustomdEdxFileName);
         } else {
@@ -133,7 +138,7 @@ class CalibdEdxDevice : public Task
     sendOutput(eos.outputs());
 
     if (mDumpToFile) {
-      mCalib->dumpToFile("calibdEdx_Obj.root", "calib");
+      mCalib->dumpToFile("calibdEdx_Obj.root");
       mCalib->getCalib().writeToFile("calibdEdx.root");
       if (mDumpToFile > 1) {
         mCalib->writeTTree("calibdEdx.histo.tree.root");