diff --git a/Modules/MUON/MCH/include/MCH/DecodingPostProcessing.h b/Modules/MUON/MCH/include/MCH/DecodingPostProcessing.h
index 70ecd8b791..684434b091 100644
--- a/Modules/MUON/MCH/include/MCH/DecodingPostProcessing.h
+++ b/Modules/MUON/MCH/include/MCH/DecodingPostProcessing.h
@@ -93,6 +93,8 @@ class DecodingPostProcessing : public PostProcessingInterface
   std::unique_ptr<HeartBeatPacketsPlotter> mHBPacketsPlotterOnCycle;
   std::unique_ptr<FECSyncStatusPlotter> mSyncStatusPlotter;
   std::unique_ptr<FECSyncStatusPlotter> mSyncStatusPlotterOnCycle;
+
+  std::unique_ptr<TH2F> mHistogramQualityPerDE; ///< quality flags for each DE, to be filled by checker task
 };
 
 template <typename T>
diff --git a/Modules/MUON/MCH/src/DecodingCheck.cxx b/Modules/MUON/MCH/src/DecodingCheck.cxx
index e7a7f46918..cf8a354aa3 100644
--- a/Modules/MUON/MCH/src/DecodingCheck.cxx
+++ b/Modules/MUON/MCH/src/DecodingCheck.cxx
@@ -241,6 +241,29 @@ void DecodingCheck::beautify(std::shared_ptr<MonitorObject> mo, Quality checkRes
       drawThresholdsPerStation(h, mMinGoodSyncFracPerStation, mMinGoodSyncFrac);
     }
   }
+
+  // update quality flags for each DE
+  if (mo->getName().find("QualityFlagPerDE") != std::string::npos) {
+    TH2F* h = dynamic_cast<TH2F*>(mo->getObject());
+    if (!h) {
+      return;
+    }
+
+    for (int deId = 0; deId < mQualityChecker.mQuality.size(); deId++) {
+      float ybin = 0;
+      if (mQualityChecker.mQuality[deId] == Quality::Good) {
+        ybin = 3;
+      }
+      if (mQualityChecker.mQuality[deId] == Quality::Medium) {
+        ybin = 2;
+      }
+      if (mQualityChecker.mQuality[deId] == Quality::Bad) {
+        ybin = 1;
+      }
+
+      h->SetBinContent(deId + 1, ybin, 1);
+    }
+  }
 }
 
 } // namespace o2::quality_control_modules::muonchambers
diff --git a/Modules/MUON/MCH/src/DecodingPostProcessing.cxx b/Modules/MUON/MCH/src/DecodingPostProcessing.cxx
index 114eef5a22..93f4cb6caf 100644
--- a/Modules/MUON/MCH/src/DecodingPostProcessing.cxx
+++ b/Modules/MUON/MCH/src/DecodingPostProcessing.cxx
@@ -150,6 +150,21 @@ void DecodingPostProcessing::initialize(Trigger t, framework::ServiceRegistryRef
   createDecodingErrorsHistos(t, &qcdb);
   createHeartBeatPacketsHistos(t, &qcdb);
   createSyncStatusHistos(t, &qcdb);
+
+  //--------------------------------------------------
+  // Detector quality histogram
+  //--------------------------------------------------
+
+  mHistogramQualityPerDE.reset();
+  mHistogramQualityPerDE = std::make_unique<TH2F>("QualityFlagPerDE", "Quality Flag vs DE", getNumDE(), 0, getNumDE(), 3, 0, 3);
+  mHistogramQualityPerDE->GetYaxis()->SetBinLabel(1, "Bad");
+  mHistogramQualityPerDE->GetYaxis()->SetBinLabel(2, "Medium");
+  mHistogramQualityPerDE->GetYaxis()->SetBinLabel(3, "Good");
+  mHistogramQualityPerDE->SetOption("colz");
+  mHistogramQualityPerDE->SetStats(0);
+  getObjectsManager()->startPublishing(mHistogramQualityPerDE.get(), core::PublicationPolicy::ThroughStop);
+  getObjectsManager()->setDefaultDrawOptions(mHistogramQualityPerDE.get(), "colz");
+  getObjectsManager()->setDisplayHint(mHistogramQualityPerDE.get(), "gridy");
 }
 
 //_________________________________________________________________________________________