diff --git a/hit2023v2/display.cpp b/hit2023v2/display.cpp
index c914535..f904c93 100644
--- a/hit2023v2/display.cpp
+++ b/hit2023v2/display.cpp
@@ -28,6 +28,8 @@ Display::Display(QWidget *parent) :
     connect(buttonGroup, SIGNAL(buttonClicked(QAbstractButton*)), this, SLOT(onButtonClicked(QAbstractButton*)));
 
     connect(ui->pushButton_savebkg, &QPushButton::clicked, this, &Display::onSaveBackgroundClicked);
+    connect(ui->pushButton_loadbkg, &QPushButton::clicked, this, &Display::onLoadBackgroundClicked);
+    connect(ui->checkBox_subbkg, &QCheckBox::stateChanged, this, &Display::onCheckBoxStateChanged);
 }
 
 Display::~Display()
@@ -77,6 +79,23 @@ void Display::plot(const QVector<unsigned short> &data)
             max = dataY[i];
     }
 
+
+    if (subtractBackground && ui->checkBox_subbkg->isChecked()) {
+        // Check if background subtraction is enabled and the checkbox is checked
+        QString planeName = ui->lineTitle->text();
+        planeName.remove(QChar(' '));
+
+        // Check if background data exists for this plane
+        if (backgroundDataMap.contains(planeName)) {
+            const QVector<unsigned short> &backgroundData = backgroundDataMap[planeName];
+
+            // Subtract background data from the current data
+            for (int i = 0; i < nrPoints; ++i) {
+                dataY[i] -= backgroundData[i];
+            }
+        }
+    }
+
     if (ui->radioButtonAutoscale->isChecked())
         ui->plot->yAxis->setRange(min-0.05*(max-min),max+0.05*(max-min));
     else if (ui->radioButtonFixedScale ->isChecked())
@@ -160,3 +179,48 @@ void Display::onSaveBackgroundClicked()
         qDebug() << "Error: Failed to open" << filename << "for writing";
     }
 }
+
+void Display::onLoadBackgroundClicked()
+{
+    // Get the plane's name (you might need to adjust how you retrieve it)
+    QString planeName = ui->lineTitle->text();
+
+    // Remove invalid characters from the plane name (e.g., spaces)
+    planeName.remove(QChar(' '));
+
+    // Generate the filename with the plane name appended
+    QString filename = QString("background_%1.txt").arg(planeName);
+
+    // Open the file for reading
+    QFile file(filename);
+    if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        QTextStream stream(&file);
+
+        // Read the data from the file and store it in the map
+        QVector<unsigned short> backgroundData;
+        while (!stream.atEnd()) {
+            QString line = stream.readLine();
+            unsigned short value = line.toUShort();
+            backgroundData.append(value);
+        }
+
+        // Close the file
+        file.close();
+
+        // Store the background data in the map
+        backgroundDataMap[planeName] = backgroundData;
+
+        // Notify the user that the data has been loaded
+        qDebug() << "Background data loaded for" << planeName;
+    } else {
+        // Failed to open the file
+        qDebug() << "Error: Failed to open" << filename << "for reading";
+    }
+}
+
+void Display::onCheckBoxStateChanged(int state)
+{
+    // The state argument will be Qt::Unchecked (0) or Qt::Checked (2)
+    subtractBackground = (state == Qt::Checked);
+}
+
diff --git a/hit2023v2/display.h b/hit2023v2/display.h
index a67bd79..017b58e 100644
--- a/hit2023v2/display.h
+++ b/hit2023v2/display.h
@@ -31,6 +31,8 @@ public slots:
     void showEvent(QShowEvent *event);
     void onButtonClicked(QAbstractButton *button);
     void onSaveBackgroundClicked();
+    void onLoadBackgroundClicked();
+    void onCheckBoxStateChanged(int state);
 
 protected:
     int nrPoints = 0;
@@ -41,6 +43,9 @@ private:
     QRadioButton *radioButtonFixedScale; // Pointer to the Fixed Scale radio button
     QRadioButton *radioButtonAutoscale;  // Pointer to the Autoscale radio button
     QButtonGroup *buttonGroup;
+    QMap<QString, QVector<unsigned short>> backgroundDataMap; // Map to store background data for each plane
+    bool subtractBackground = false; // Flag to track if background subtraction is enabled
+
 
 };
 
diff --git a/hit2023v2/display.ui b/hit2023v2/display.ui
index 4215cb9..d3aa2c9 100644
--- a/hit2023v2/display.ui
+++ b/hit2023v2/display.ui
@@ -144,6 +144,32 @@
     <string>save bkg</string>
    </property>
   </widget>
+  <widget class="QPushButton" name="pushButton_loadbkg">
+   <property name="geometry">
+    <rect>
+     <x>420</x>
+     <y>360</y>
+     <width>80</width>
+     <height>24</height>
+    </rect>
+   </property>
+   <property name="text">
+    <string>load bkg</string>
+   </property>
+  </widget>
+  <widget class="QCheckBox" name="checkBox_subbkg">
+   <property name="geometry">
+    <rect>
+     <x>330</x>
+     <y>360</y>
+     <width>77</width>
+     <height>22</height>
+    </rect>
+   </property>
+   <property name="text">
+    <string>sub bkg</string>
+   </property>
+  </widget>
  </widget>
  <customwidgets>
   <customwidget>
diff --git a/hit2023v2/release/hit2023v2.exe b/hit2023v2/release/hit2023v2.exe
index 5b8738c..1ce04fa 100644
Binary files a/hit2023v2/release/hit2023v2.exe and b/hit2023v2/release/hit2023v2.exe differ
diff --git a/hit2023v2/ui_display.h b/hit2023v2/ui_display.h
index f68ca2d..7cb96bd 100644
--- a/hit2023v2/ui_display.h
+++ b/hit2023v2/ui_display.h
@@ -12,6 +12,7 @@
 #include <QtCore/QVariant>
 #include <QtWidgets/QApplication>
 #include <QtWidgets/QButtonGroup>
+#include <QtWidgets/QCheckBox>
 #include <QtWidgets/QDialog>
 #include <QtWidgets/QFrame>
 #include <QtWidgets/QHBoxLayout>
@@ -41,6 +42,8 @@ public:
     QSpinBox *spinBox_fixedmin;
     QSpinBox *spinBox_fixedmax;
     QPushButton *pushButton_savebkg;
+    QPushButton *pushButton_loadbkg;
+    QCheckBox *checkBox_subbkg;
     QButtonGroup *buttonGroup;
 
     void setupUi(QDialog *display)
@@ -133,6 +136,12 @@ public:
         pushButton_savebkg = new QPushButton(display);
         pushButton_savebkg->setObjectName("pushButton_savebkg");
         pushButton_savebkg->setGeometry(QRect(510, 360, 80, 24));
+        pushButton_loadbkg = new QPushButton(display);
+        pushButton_loadbkg->setObjectName("pushButton_loadbkg");
+        pushButton_loadbkg->setGeometry(QRect(420, 360, 80, 24));
+        checkBox_subbkg = new QCheckBox(display);
+        checkBox_subbkg->setObjectName("checkBox_subbkg");
+        checkBox_subbkg->setGeometry(QRect(330, 360, 77, 22));
 
         retranslateUi(display);
 
@@ -146,6 +155,8 @@ public:
         radioButtonMaxScale->setText(QCoreApplication::translate("display", "Max Y-Scale", nullptr));
         radioButtonFixedScale->setText(QCoreApplication::translate("display", "Fixed Y-Scale", nullptr));
         pushButton_savebkg->setText(QCoreApplication::translate("display", "save bkg", nullptr));
+        pushButton_loadbkg->setText(QCoreApplication::translate("display", "load bkg", nullptr));
+        checkBox_subbkg->setText(QCoreApplication::translate("display", "sub bkg", nullptr));
     } // retranslateUi
 
 };