diff --git a/CMakeLists.txt b/CMakeLists.txt
index def39765a..88dab1189 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -167,7 +167,7 @@ endif (SLS_USE_RECEIVER)
 
 if (SLS_USE_GUI)   
     find_package(Qt4 REQUIRED)
-    find_package(Qwt 6 REQUIRED)
+    find_package(Qwt 6.1 REQUIRED)
     if (QT4_FOUND AND QWT_FOUND)
         add_subdirectory(slsDetectorGui)
     endif()
diff --git a/slsDetectorGui/slsDetectorPlotting/include/SlsQt1DZoomer.h b/slsDetectorGui/slsDetectorPlotting/include/SlsQt1DZoomer.h
index 715834be0..ec762ddad 100755
--- a/slsDetectorGui/slsDetectorPlotting/include/SlsQt1DZoomer.h
+++ b/slsDetectorGui/slsDetectorPlotting/include/SlsQt1DZoomer.h
@@ -20,11 +20,7 @@ class SlsQt1DZoomer:public QwtPlotZoomer{
   bool xIsLog,yIsLog;
 
  public:
-#if QWT_VERSION < 0x060100
-  SlsQt1DZoomer(QwtPlotCanvas *canvas):QwtPlotZoomer(canvas){
-#else
-  SlsQt1DZoomer(QWidget *canvas):QwtPlotZoomer(canvas){
-#endif
+    SlsQt1DZoomer(QWidget *canvas):QwtPlotZoomer(canvas){
     setTrackerMode(AlwaysOn);
     xIsLog=yIsLog=0;
   }
@@ -48,25 +44,15 @@ class SlsQt1DZoomer:public QwtPlotZoomer{
   bool SetLogY(bool yes) { return yIsLog=yes;}
 
  
-#if QWT_VERSION<0x060000
-    virtual QwtText trackerText(const QwtDoublePoint &pos) const{
-#else
-using QwtPlotPicker::trackerText;
+
+  using QwtPlotPicker::trackerText;
   virtual QwtText trackerText(const QPoint &pos) const{
-#endif
-    QColor bg(Qt::white);
 
-#if QT_VERSION >= 0x040300
-    bg.setAlpha(200);
-#endif
-
-#if QWT_VERSION<0x060000
-    QwtText text = QwtPlotZoomer::trackerText(pos);
-#else
-    QwtText text = QwtPlotPicker::trackerText(pos);
-#endif
-    text.setBackgroundBrush( QBrush( bg ));
-    return text;
+  QColor bg(Qt::white);
+  bg.setAlpha(200);
+  QwtText text = QwtPlotPicker::trackerText(pos);
+  text.setBackgroundBrush( QBrush( bg ));
+  return text;
   }
 
 };
diff --git a/slsDetectorGui/slsDetectorPlotting/include/SlsQt2DHist.h b/slsDetectorGui/slsDetectorPlotting/include/SlsQt2DHist.h
index 76a63758a..cccdea0da 100755
--- a/slsDetectorGui/slsDetectorPlotting/include/SlsQt2DHist.h
+++ b/slsDetectorGui/slsDetectorPlotting/include/SlsQt2DHist.h
@@ -77,9 +77,7 @@ class SlsQt2DHist: public QwtRasterData{
     return (QwtRasterData*) this;
   }
 
-#if QWT_VERSION<0x060000
-   virtual QwtDoubleInterval range() const{ return QwtDoubleInterval(z_min,z_max);}
-#else
+
   virtual QwtInterval range() const{ return QwtInterval(z_min,z_max);}
   virtual QwtInterval interval(Qt::Axis axis) const { 
     switch (axis){
@@ -93,7 +91,7 @@ class SlsQt2DHist: public QwtRasterData{
       return QwtInterval(z_min,z_max);
     };
   };
-#endif
+
 
 
 
diff --git a/slsDetectorGui/slsDetectorPlotting/include/SlsQt2DPlot.h b/slsDetectorGui/slsDetectorPlotting/include/SlsQt2DPlot.h
index 144bd1296..8348863b8 100755
--- a/slsDetectorGui/slsDetectorPlotting/include/SlsQt2DPlot.h
+++ b/slsDetectorGui/slsDetectorPlotting/include/SlsQt2DPlot.h
@@ -85,13 +85,8 @@ private:
 
     QwtLinearColorMap* colorMapLinearScale{nullptr};
     QwtLinearColorMap* colorMapLogScale{nullptr};
-#if QWT_VERSION<0x060000
-    QwtValueList* contourLevelsLinear{nullptr};
-    QwtValueList* contourLevelsLog{nullptr};
-#else 
     QList<double> contourLevelsLinear;
     QList<double> contourLevelsLog;
-#endif
     bool disableZoom{false};
     int isLog;
 };
diff --git a/slsDetectorGui/slsDetectorPlotting/include/SlsQt2DZoomer.h b/slsDetectorGui/slsDetectorPlotting/include/SlsQt2DZoomer.h
index d4f8d4376..ec53d8790 100755
--- a/slsDetectorGui/slsDetectorPlotting/include/SlsQt2DZoomer.h
+++ b/slsDetectorGui/slsDetectorPlotting/include/SlsQt2DZoomer.h
@@ -25,11 +25,8 @@ class SlsQt2DZoomer:public QwtPlotZoomer{
   SlsQt2DHist* hist;
 
  public:
-#if QWT_VERSION < 0x060100
-  SlsQt2DZoomer(QwtPlotCanvas *canvas):QwtPlotZoomer(canvas){
-#else
+
   SlsQt2DZoomer(QWidget *canvas):QwtPlotZoomer(canvas){
-#endif
     setTrackerMode(AlwaysOn);
   }
 
@@ -38,15 +35,11 @@ class SlsQt2DZoomer:public QwtPlotZoomer{
   }
   
  
-#if QWT_VERSION<0x060000
-    virtual QwtText trackerText(const QwtDoublePoint &pos) const{
-#else
+
   virtual QwtText trackerTextF(const QPointF &pos) const{
-#endif
     QColor bg(Qt::white);
-#if QT_VERSION >= 0x040300
     bg.setAlpha(200);
-#endif
+
 
     
     //QwtText text = QwtPlotZoomer::trackerText(pos);
@@ -57,12 +50,10 @@ class SlsQt2DZoomer:public QwtPlotZoomer{
       sprintf(t,"%3.2f, %3.2f, %3.2f",pos.x(),pos.y(),hist->value(pos.x(),pos.y()));
       text.setText(t);
     }else {
-#if QWT_VERSION<0x060000
-    QwtText text = QwtPlotZoomer::trackerText(pos);
-#else
+
     QPoint p=pos.toPoint();
     QwtText text = QwtPlotZoomer::trackerText(p);
-#endif
+
 
     }
     text.setBackgroundBrush( QBrush( bg ));
diff --git a/slsDetectorGui/slsDetectorPlotting/src/SlsQt1DPlot.cxx b/slsDetectorGui/slsDetectorPlotting/src/SlsQt1DPlot.cxx
index 54045005d..1220275bc 100755
--- a/slsDetectorGui/slsDetectorPlotting/src/SlsQt1DPlot.cxx
+++ b/slsDetectorGui/slsDetectorPlotting/src/SlsQt1DPlot.cxx
@@ -17,9 +17,9 @@
 #include "qwt_symbol.h"
 #include <stdlib.h>
 
-#if QWT_VERSION >= 0x060100
-#define QwtLog10ScaleEngine QwtLogScaleEngine
-#endif
+
+#define QwtLog10ScaleEngine QwtLogScaleEngine //hmm 
+
 
 SlsQtH1D::SlsQtH1D(QString title, int n, double min, double max, double *data) : QwtPlotCurve(title), x(nullptr), y(nullptr), pen_ptr(nullptr) {
     Initailize();
@@ -39,11 +39,11 @@ void SlsQtH1D::Initailize() {
 }
 
 SlsQtH1D::~SlsQtH1D() {
-    if (x)
+    
         delete [] x;
-    if (y)
+    
         delete [] y;
-    if (pen_ptr)   
+      
         delete pen_ptr;
 }
 
@@ -138,11 +138,8 @@ void  SlsQtH1D::setSymbolMarkers(bool isMarker) {
         marker->setStyle(QwtSymbol::Cross);
         marker->setSize(5, 5);
     }
-#if QWT_VERSION < 0x060000
-    setSymbol(*marker);
-#else
     setSymbol(marker);
-#endif
+
 }
 
 void SlsQtH1D::SetData(int n, double xmin, double xmax, double *data) {
@@ -173,11 +170,9 @@ void SlsQtH1D::SetData(int n, double xmin, double xmax, double *data) {
             firstYgt0 = y[i];
     }
 
-#if QWT_VERSION < 0x060000
-    setRawData(x, y, ndata);
-#else
+
     setRawSamples(x, y, ndata);
-#endif
+
 }
 
 void SlsQtH1D::SetData(int n, double *data_x, double *data_y) {
@@ -206,12 +201,8 @@ void SlsQtH1D::SetData(int n, double *data_x, double *data_y) {
         if (y[b] > 0 && (firstYgt0 < 0 || firstYgt0 > y[b]))
             firstYgt0 = y[b];
     }
-
-    // #if QWT_VERSION<0x060000
-    //   setRawData(x,y,ndata);
-    // #else
     setRawSamples(x, y, ndata);
-    // #endif
+
 }
 
 int SlsQtH1D::SetUpArrays(int n) {
@@ -219,9 +210,9 @@ int SlsQtH1D::SetUpArrays(int n) {
 
     if (n + 1 > n_array) {
         n_array = n + 1;
-        if (x)
+        
             delete x;
-        if (y)
+        
             delete y;
         x = new double[n_array];
         y = new double[n_array];
@@ -285,7 +276,7 @@ SlsQtH1DList::SlsQtH1DList(SlsQtH1D *hist) {
 }
 
 SlsQtH1DList::~SlsQtH1DList() {
-    if (the_next)
+    
         delete the_next;
 }
 
@@ -361,15 +352,15 @@ SlsQt1DPlot::SlsQt1DPlot(QWidget *parent) : QwtPlot(parent) {
 }
 
 SlsQt1DPlot::~SlsQt1DPlot() {
-    if (hist_list)
+    
         delete hist_list;
-    if (hline)
+    
         delete hline;
-    if (vline)
+    
         delete vline;
-    if (zoomer)
+    
         delete zoomer;
-     if (panner)
+     
         delete panner;       
 }
 
@@ -554,45 +545,24 @@ void SlsQt1DPlot::alignScales() {
 }
 
 void SlsQt1DPlot::UnknownStuff() {
-#if QWT_VERSION < 0x060000
-    // Disable polygon clipping
-    //not supported for version 6
-    QwtPainter::setDeviceClipping(false);
-    canvas()->setPaintAttribute(QwtPlotCanvas::PaintCached, false);
-    canvas()->setPaintAttribute(QwtPlotCanvas::PaintPacked, false);
-#else
     // We don't need the cache here
     ((QwtPlotCanvas *)canvas())->setPaintAttribute(QwtPlotCanvas::BackingStore, false);
-
-#endif
-
-#if QT_VERSION >= 0x040000
 #ifdef Q_WS_X11
     //  Qt::WA_PaintOnScreen is only supported for X11, but leads
     //  to substantial bugs with Qt 4.2.x/Windows
     canvas()->setAttribute(Qt::WA_PaintOnScreen, true);
 #endif
-#endif
+
 }
 
 //Added by Dhanya on 19.06.2012 to disable zooming when any of the axes range has been set
 void SlsQt1DPlot::DisableZoom(bool disable) {
     if (disableZoom != disable) {
         disableZoom = disable;
-#ifdef VERBOSE
-        if (disable)
-            std::cout << "Disabling zoom\n";
-        else
-            std::cout << "Enabling zoom\n";
-#endif
         if (disable) {
             if (zoomer) {
                 zoomer->setMousePattern(QwtEventPattern::MouseSelect1, Qt::NoButton);
-#if QT_VERSION < 0x040000
-                zoomer->setMousePattern(QwtEventPattern::MouseSelect2, Qt::NoButton, Qt::ControlButton);
-#else
                 zoomer->setMousePattern(QwtEventPattern::MouseSelect2, Qt::NoButton, Qt::ControlModifier);
-#endif
                 zoomer->setMousePattern(QwtEventPattern::MouseSelect3, Qt::NoButton);
             }
             if (panner)
@@ -600,11 +570,7 @@ void SlsQt1DPlot::DisableZoom(bool disable) {
         } else {
             if (zoomer) {
                 zoomer->setMousePattern(QwtEventPattern::MouseSelect1, Qt::LeftButton);
-#if QT_VERSION < 0x040000
-                zoomer->setMousePattern(QwtEventPattern::MouseSelect2, Qt::RightButton, Qt::ControlButton);
-#else
                 zoomer->setMousePattern(QwtEventPattern::MouseSelect2, Qt::RightButton, Qt::ControlModifier);
-#endif
                 zoomer->setMousePattern(QwtEventPattern::MouseSelect3, Qt::RightButton);
             }
             if (panner)
diff --git a/slsDetectorGui/slsDetectorPlotting/src/SlsQt1DZoomer.cxx b/slsDetectorGui/slsDetectorPlotting/src/SlsQt1DZoomer.cxx
index 84aab674f..50b016687 100755
--- a/slsDetectorGui/slsDetectorPlotting/src/SlsQt1DZoomer.cxx
+++ b/slsDetectorGui/slsDetectorPlotting/src/SlsQt1DZoomer.cxx
@@ -34,43 +34,27 @@ void SlsQt1DZoomer::SetZoomBase(double xmin,double ymin,double x_width, double y
 
   if(plot()){
     if(xIsLog){
-      #if QWT_VERSION < 0x50200
-        double xmin_curr = plot()->axisScaleDiv(QwtPlot::xBottom)->lBound();
-        double xmax_curr = plot()->axisScaleDiv(QwtPlot::xBottom)->hBound();
-      #elif QWT_VERSION < 0x060100
-        double xmin_curr = plot()->axisScaleDiv(QwtPlot::xBottom)->lowerBound();
-        double xmax_curr = plot()->axisScaleDiv(QwtPlot::xBottom)->upperBound();
-      #else
-        double xmin_curr = plot()->axisScaleDiv(QwtPlot::xBottom).lowerBound();
-        double xmax_curr = plot()->axisScaleDiv(QwtPlot::xBottom).upperBound();
-      #endif
-      if(xmin_curr<xmin)         xmin_curr=xmin;
-      if(xmax_curr>xmin+x_width) xmax_curr=xmin+x_width;
+      double xmin_curr = plot()->axisScaleDiv(QwtPlot::xBottom).lowerBound();
+      double xmax_curr = plot()->axisScaleDiv(QwtPlot::xBottom).upperBound();
+      if(xmin_curr<xmin)
+        xmin_curr=xmin;
+      if(xmax_curr>xmin+x_width)
+        xmax_curr=xmin+x_width;
       plot()->setAxisScale(QwtPlot::xBottom,xmin_curr,xmax_curr);
     }
     if(yIsLog){
-      #if QWT_VERSION < 0x50200
-        double ymin_curr = plot()->axisScaleDiv(QwtPlot::yLeft)->lBound();
-        double ymax_curr = plot()->axisScaleDiv(QwtPlot::yLeft)->hBound();
-      #elif QWT_VERSION < 0x060100
-        double ymin_curr = plot()->axisScaleDiv(QwtPlot::yLeft)->lowerBound();
-        double ymax_curr = plot()->axisScaleDiv(QwtPlot::yLeft)->upperBound();
-      #else
-        double ymin_curr = plot()->axisScaleDiv(QwtPlot::yLeft).lowerBound();
-        double ymax_curr = plot()->axisScaleDiv(QwtPlot::yLeft).upperBound();
-      #endif
-      if(ymin_curr<ymin)         ymin_curr=ymin;
-      if(ymax_curr>ymin+y_width) ymax_curr=ymin+y_width;
+      double ymin_curr = plot()->axisScaleDiv(QwtPlot::yLeft).lowerBound();
+      double ymax_curr = plot()->axisScaleDiv(QwtPlot::yLeft).upperBound();
+      if(ymin_curr<ymin)
+        ymin_curr=ymin;
+      if(ymax_curr>ymin+y_width)
+        ymax_curr=ymin+y_width;
       plot()->setAxisScale(QwtPlot::yLeft,ymin_curr,ymax_curr);
     }
     plot()->replot();
   }
-
-#if QWT_VERSION<0x060000
-  setZoomBase(QwtDoubleRect(xmin,ymin,x_width,y_width));
-#else
   setZoomBase(QRectF(xmin,ymin,x_width,y_width));
-#endif
+
 }
 
 void SlsQt1DZoomer::SetZoomBase(SlsQtH1D* h){
diff --git a/slsDetectorGui/slsDetectorPlotting/src/SlsQt2DHist.cxx b/slsDetectorGui/slsDetectorPlotting/src/SlsQt2DHist.cxx
index 6009f7cd6..d96fc248d 100755
--- a/slsDetectorGui/slsDetectorPlotting/src/SlsQt2DHist.cxx
+++ b/slsDetectorGui/slsDetectorPlotting/src/SlsQt2DHist.cxx
@@ -20,7 +20,7 @@ SlsQt2DHist::SlsQt2DHist(int nbinsx, double xmin, double xmax, int nbinsy, doubl
 }
 
 
-SlsQt2DHist::~SlsQt2DHist(){if(data) delete [] data;}
+SlsQt2DHist::~SlsQt2DHist(){ delete [] data;}
 
 int SlsQt2DHist::GetBinIndex(int bx, int by){
   int b = bx*ny+by;
@@ -55,16 +55,8 @@ void SlsQt2DHist::SetData(int nbinsx, double xmin, double xmax, int nbinsy,doubl
   if(x_min!=xmin||x_max!=xmax||y_min!=ymin||y_max!=ymax){
     x_min=xmin;x_max=xmax;
     y_min=ymin;y_max=ymax;
-   
-#if QWT_VERSION<0x060000	  
-    setBoundingRect(QRectF(xmin,ymin,x_max-x_min,y_max-y_min));
-#else
     setInterval( Qt::XAxis,QwtInterval(xmin,xmax));
     setInterval( Qt::YAxis,QwtInterval(ymin,ymax));
-    	//  setInterval( Qt::ZAxis,QwtInterval(zmin,zmax));
-    //setInterval( Qt::ZAxis,QwtInterval(0.,1.));
-#endif
-
   }
 
   if(nbinsx*nbinsy<1){
@@ -73,7 +65,7 @@ void SlsQt2DHist::SetData(int nbinsx, double xmin, double xmax, int nbinsy,doubl
   }
 
   if(nbinsx*nbinsy>nx_array*ny_array){
-    if(data) delete [] data;
+    delete [] data;
     data = new double [nbinsx*nbinsy+1];  //one for under/overflow bin
     nx_array = nbinsx;
     ny_array = nbinsy;
@@ -107,12 +99,7 @@ void SlsQt2DHist::SetMinMax(double zmin,double zmax){
     if(z_min>0) z_min/=1.02; else z_min*=1.02;
     if(z_max>0) z_max*=1.02; else z_max/=1.02;
   }
-#if QWT_VERSION<0x060000	  
-    ;
-#else
 	setInterval( Qt::ZAxis,QwtInterval(z_min,z_max));
-#endif
- 
 }
 
 double SlsQt2DHist::GetMean(){
@@ -131,11 +118,8 @@ double SlsQt2DHist::SetMinimumToFirstGreaterThanZero(){
   for(int i=0;i<nb;i++){
     if(data[i]>0 && data[i]<z_min) z_min=data[i];
   }
-#if QWT_VERSION<0x060000	  
-    ;
-#else
 	setInterval( Qt::ZAxis,QwtInterval(z_min,z_max));
-#endif
+
  
   return z_min;
 }
diff --git a/slsDetectorGui/slsDetectorPlotting/src/SlsQt2DPlot.cxx b/slsDetectorGui/slsDetectorPlotting/src/SlsQt2DPlot.cxx
index 5fa7be29a..553d32b8a 100755
--- a/slsDetectorGui/slsDetectorPlotting/src/SlsQt2DPlot.cxx
+++ b/slsDetectorGui/slsDetectorPlotting/src/SlsQt2DPlot.cxx
@@ -21,32 +21,21 @@
 
 
 
-#if QWT_VERSION >= 0x060100
-#define QwtLog10ScaleEngine QwtLogScaleEngine
-#endif
+
+#define QwtLog10ScaleEngine QwtLogScaleEngine //hmm remove? 
+
 
 SlsQt2DPlot::SlsQt2DPlot(QWidget *parent) : QwtPlot(parent) {
     isLog = 0;
-
     axisScaleEngine(QwtPlot::yLeft)->setAttribute(QwtScaleEngine::Floating);
     axisScaleEngine(QwtPlot::xBottom)->setAttribute(QwtScaleEngine::Floating);
-
     d_spectrogram = new QwtPlotSpectrogram();
-
     hist = new SlsQt2DHist();
     SetupZoom();
     SetupColorMap();
-
-#if QWT_VERSION < 0x060000
-    d_spectrogram->setData(*hist);
-#else
     d_spectrogram->setData(hist);
-#endif
-
     d_spectrogram->attach(this);
-
     plotLayout()->setAlignCanvasToScales(true);
-
     FillTestPlot();
     Update();
 }
@@ -57,25 +46,11 @@ SlsQt2DPlot::~SlsQt2DPlot() {
         d_spectrogram->detach();
         //delete d_spectrogram;
     }
-    if (hist) {
-        delete hist;  
-    }
-    if (colorMapLinearScale)
-        delete colorMapLinearScale;   
-    if (colorMapLogScale)
-        delete colorMapLogScale;  
-
-
-    if (zoomer)
-        delete zoomer;   
-    if (panner)
-        delete panner;   
-#if QWT_VERSION<0x060000        
-     if (contourLevelsLinear)
-        delete contourLevelsLinear;   
-     if (contourLevelsLog)
-        delete contourLevelsLog;  
-#endif 
+    delete hist;  
+    delete colorMapLinearScale;   
+    delete colorMapLogScale;  
+    delete zoomer;   
+    delete panner;   
 }
 
 void SlsQt2DPlot::SetTitle(QString title) {
@@ -120,40 +95,16 @@ void SlsQt2DPlot::SetZFont(const QFont& f) {
 }
 
 void SlsQt2DPlot::SetupColorMap() {
-   
     colorMapLinearScale = myColourMap(0);
-#if QWT_VERSION < 0x060000
-    d_spectrogram->setColorMap(*colorMapLinearScale);
-#else
     d_spectrogram->setColorMap(colorMapLinearScale);
-#endif
-
     colorMapLogScale = myColourMap(1);
-#if QWT_VERSION < 0x060000
-    contourLevelsLinear = new QwtValueList();
-    for (double level = 0.5; level < 10.0; level += 1.0)
-        (*contourLevelsLinear) += level;
-    d_spectrogram->setContourLevels(*contourLevelsLinear);
-#else
-    ;
-
     for (double level = 0.5; level < 10.0; level += 1.0)
         (contourLevelsLinear) += level;
     d_spectrogram->setContourLevels(contourLevelsLinear);
-#endif
-
-    //
-#if QWT_VERSION < 0x060000
-    contourLevelsLog = new QwtValueList();
-    for (double level = 0.5; level < 10.0; level += 1.0)
-        (*contourLevelsLog) += (pow(10, 2 * level / 10.0) - 1) / 99.0 * 10;
-
-#else
-    ;
 
     for (double level = 0.5; level < 10.0; level += 1.0)
         (contourLevelsLog) += (pow(10, 2 * level / 10.0) - 1) / 99.0 * 10;
-#endif
+
 
     // A color bar on the right axis
     rightAxis = axisWidget(QwtPlot::yRight);
@@ -225,23 +176,14 @@ void SlsQt2DPlot::SetupZoom() {
 }*/
 
 void SlsQt2DPlot::UnZoom(bool replot) {
-#if QWT_VERSION < 0x060000
-    zoomer->setZoomBase(QwtDoubleRect(hist->GetXMin(), hist->GetYMin(), hist->GetXMax() - hist->GetXMin(), hist->GetYMax() - hist->GetYMin()));
-#else
+
     zoomer->setZoomBase(QRectF(hist->GetXMin(), hist->GetYMin(), hist->GetXMax() - hist->GetXMin(), hist->GetYMax() - hist->GetYMin()));
-#endif
     zoomer->setZoomBase(replot); //Call replot for the attached plot before initializing the zoomer with its scales.
                                  // zoomer->zoom(0);
 }
 
 void SlsQt2DPlot::SetZoom(double xmin, double ymin, double x_width, double y_width) {
-
-#if QWT_VERSION < 0x060000
-    zoomer->setZoomBase(QwtDoubleRect(xmin, ymin, x_width, y_width));
-
-#else
     zoomer->setZoomBase(QRectF(xmin, ymin, x_width, y_width));
-#endif
 }
 
 void SlsQt2DPlot::DisableZoom(bool disable) {
@@ -330,28 +272,16 @@ QwtLinearColorMap *SlsQt2DPlot::myColourMap(int log) {
 }
 
 void SlsQt2DPlot::Update() {
-#if QWT_VERSION < 0x060000
-    rightAxis->setColorMap(d_spectrogram->data().range(), d_spectrogram->colorMap());
-#else
     if (isLog)
         hist->SetMinimumToFirstGreaterThanZero();
-
     const QwtInterval zInterval = d_spectrogram->data()->interval(Qt::ZAxis);
-
     rightAxis->setColorMap(zInterval, myColourMap(isLog));
-#endif
+
     if (!zoomer->zoomRectIndex())
         UnZoom();
-#if QWT_VERSION < 0x060000
-    setAxisScale(QwtPlot::yRight, d_spectrogram->data().range().minValue(),
-                 d_spectrogram->data().range().maxValue());
-#else
-    //cprintf(MAGENTA, "zmin:%f zmax:%f\n", zInterval.minValue(), zInterval.maxValue());
     setAxisScale(QwtPlot::yRight, zInterval.minValue(), zInterval.maxValue());
     plotLayout()->setAlignCanvasToScales(true);
-#endif
     replot();
-
 }
 
 void SlsQt2DPlot::SetInterpolate(bool enable) {
@@ -387,63 +317,20 @@ void SlsQt2DPlot::SetZRange(bool isMin, bool isMax, double min, double max){
 void SlsQt2DPlot::LogZ(bool on) {
     if (on) {
         isLog = 1;
-        //if(hist->GetMinimum()<=0) hist->SetMinimumToFirstGreaterThanZero();
-#if QWT_VERSION < 0x060000
-        d_spectrogram->setColorMap(*colorMapLogScale);
-#else
         d_spectrogram->setColorMap(myColourMap(isLog));
-#endif
         setAxisScaleEngine(QwtPlot::yRight, new QwtLog10ScaleEngine);
-#if QWT_VERSION < 0x060000
-        d_spectrogram->setContourLevels(*contourLevelsLog);
-#else
         d_spectrogram->setContourLevels(contourLevelsLog);
-#endif
     } else {
         isLog = 0;
-
-#if QWT_VERSION < 0x060000
-        d_spectrogram->setColorMap(*colorMapLinearScale);
-#else
         d_spectrogram->setColorMap(myColourMap(isLog));
-#endif
-
         setAxisScaleEngine(QwtPlot::yRight, new QwtLinearScaleEngine);
-
-#if QWT_VERSION < 0x060000
-        d_spectrogram->setContourLevels(*contourLevelsLinear);
-#else
         d_spectrogram->setContourLevels(contourLevelsLinear);
-#endif
     }
     Update();
 }
 
 void SlsQt2DPlot::showSpectrogram(bool on) {
-    //  static int io=0;
-    //  FillTestPlot(io++);
     d_spectrogram->setDisplayMode(QwtPlotSpectrogram::ImageMode, on);
     d_spectrogram->setDefaultContourPen(on ? QPen() : QPen(Qt::NoPen));
     Update();
-}
-
-
-/*
-void SlsQt2DPlot::printPlot(){
-  QPrinter printer;
-    printer.setOrientation(QPrinter::Landscape);
-#if QT_VERSION < 0x040000
-    printer.setColorMode(QPrinter::Color);
-    printer.setOutputFileName("spectrogram.ps");
-    if (printer.setup())
-#else
-    printer.setOutputFileName("spectrogram.pdf");
-    QPrintDialog dialog(&printer);
-    if ( dialog.exec() )
-#endif
-      {
-        print(printer);
-      }
-}
-
-*/
+}
\ No newline at end of file
diff --git a/slsDetectorGui/src/qCloneWidget.cpp b/slsDetectorGui/src/qCloneWidget.cpp
index 148b0d4dc..d9130be6a 100755
--- a/slsDetectorGui/src/qCloneWidget.cpp
+++ b/slsDetectorGui/src/qCloneWidget.cpp
@@ -22,13 +22,13 @@ qCloneWidget::qCloneWidget(QWidget *parent, SlsQt1DPlot* p1, SlsQt2DPlot* p2, Sl
 }
 
 qCloneWidget::~qCloneWidget() {
-    if (plot1d)
+    
         delete plot1d;
-    if (plot2d)
+    
         delete plot2d;
-    if (gainplot1d)
+    
         delete gainplot1d;        
-    if (gainplot2d)
+    
         delete gainplot2d;      
 }
 
diff --git a/slsDetectorGui/src/qDrawPlot.cpp b/slsDetectorGui/src/qDrawPlot.cpp
index 3b7d3c5c5..171b69f33 100755
--- a/slsDetectorGui/src/qDrawPlot.cpp
+++ b/slsDetectorGui/src/qDrawPlot.cpp
@@ -20,39 +20,27 @@ qDrawPlot::qDrawPlot(QWidget *parent, sls::Detector *detector) : QWidget(parent)
 }
 
 qDrawPlot::~qDrawPlot() {
-
     DetachHists();
     for (QVector<SlsQtH1D *>::iterator h = hists1d.begin();
-         h != hists1d.end(); ++h)
-        delete *h;
+         h != hists1d.end(); ++h){
+             delete *h;
+         }
+        
     hists1d.clear();
-
-    if (datax1d)
-        delete [] datax1d;
+    delete [] datax1d;
     for (auto &it : datay1d)
         delete [] it;
-    if (gainDatay1d)
-        delete [] gainDatay1d;    
-    if (data2d)
-        delete [] data2d;
-     if (gainData)
-        delete [] gainData;       
-
-    if (plot1d)
-        delete plot1d;
-    if (gainhist1d)
-        delete gainhist1d;  
-    if (gainplot1d)
-        delete gainplot1d;    
-    if (plot2d)
-        delete plot2d;
-    if (gainplot2d)
-        delete gainplot2d;
-
-    if (pedestalVals)
-        delete [] pedestalVals;
-    if (tempPedestalVals)
-        delete [] tempPedestalVals;          
+    
+    delete [] gainDatay1d;    
+    delete [] data2d;
+    delete [] gainData;       
+    delete plot1d;
+    delete gainhist1d;  
+    delete gainplot1d;    
+    delete plot2d;
+    delete gainplot2d;
+    delete [] pedestalVals;
+    delete [] tempPedestalVals;          
 }
 
 void qDrawPlot::SetupWidgetWindow() {
@@ -127,7 +115,7 @@ void qDrawPlot::SetupPlots() {
     widgetStatistics->hide();
 
     // setup 1d data
-    if (datax1d)
+    
         delete[] datax1d;
     datax1d = new double[nPixelsX];
     if (datay1d.size()) {
@@ -160,7 +148,7 @@ void qDrawPlot::SetupPlots() {
     h->Attach(plot1d);
     plot1d->hide();
 
-    if (gainDatay1d)
+    
     delete[] gainDatay1d;
    gainDatay1d = new double[nPixelsX];
     // default display data
@@ -189,7 +177,7 @@ void qDrawPlot::SetupPlots() {
     gainplot1d->hide();
 
     // setup 2d data
-    if (data2d)
+    
         delete [] data2d;    
     data2d = new double[nPixelsY * nPixelsX];
     for (unsigned int px = 0; px < nPixelsX; ++px)
@@ -199,7 +187,7 @@ void qDrawPlot::SetupPlots() {
                          pow(nPixelsX / 2, 2) / pow(1 + 1, 2) +
                      pow(double(py) - nPixelsY / 2, 2) / pow(nPixelsY / 2, 2)) /
                 sqrt(2);
-    if (gainData)
+    
         delete [] gainData;    
     gainData = new double[nPixelsY * nPixelsX];
     for (unsigned int px = 0; px < nPixelsX; ++px)
@@ -714,7 +702,7 @@ void qDrawPlot::GetData(detectorData *data, uint64_t frameIndex, uint32_t subFra
         nPixelsX = data->nx;
         nPixelsY = data->ny;
         FILE_LOG(logINFO) << "Change in Detector Shape:\n\tnPixelsX:" << nPixelsX << " nPixelsY:" << nPixelsY;
-        if (data2d)
+        
             delete [] data2d;    
         data2d = new double[nPixelsY * nPixelsX];
         std::fill(data2d, data2d + nPixelsX * nPixelsY, 0);
@@ -742,11 +730,11 @@ void qDrawPlot::GetData(detectorData *data, uint64_t frameIndex, uint32_t subFra
     // reset pedestal
     if (resetPedestal) {
         pedestalCount = 0;
-        if (pedestalVals != nullptr)
+        
             delete [] pedestalVals;
         pedestalVals = new double[nPixels];
         std::fill(pedestalVals, pedestalVals + nPixels, 0);
-        if (tempPedestalVals != nullptr)
+        
             delete [] tempPedestalVals;
         tempPedestalVals = new double[nPixels];
         std::fill(tempPedestalVals, tempPedestalVals + nPixels, 0);
diff --git a/slsDetectorGui/src/qTabDataOutput.cpp b/slsDetectorGui/src/qTabDataOutput.cpp
index 49df19c0b..b12084cb5 100755
--- a/slsDetectorGui/src/qTabDataOutput.cpp
+++ b/slsDetectorGui/src/qTabDataOutput.cpp
@@ -17,7 +17,6 @@ qTabDataOutput::qTabDataOutput(QWidget *parent, sls::Detector *detector) : QWidg
 }
 
 qTabDataOutput::~qTabDataOutput() {
-	if (btnGroupRate)
 		delete btnGroupRate;
 }
 
diff --git a/slsDetectorGui/src/qTabDebugging.cpp b/slsDetectorGui/src/qTabDebugging.cpp
index 30844a861..9fe7114b0 100755
--- a/slsDetectorGui/src/qTabDebugging.cpp
+++ b/slsDetectorGui/src/qTabDebugging.cpp
@@ -17,13 +17,9 @@ qTabDebugging::qTabDebugging(QWidget *parent, sls::Detector *detector) :
 }
 
 qTabDebugging::~qTabDebugging() {
-    if (treeDet)
         delete treeDet;
-    if (lblDetectorHostname)
         delete lblDetectorHostname;
-    if (lblDetectorFirmware)
         delete lblDetectorFirmware;
-    if (lblDetectorSoftware)
         delete lblDetectorSoftware;
 }
 
diff --git a/slsDetectorGui/src/qTabMeasurement.cpp b/slsDetectorGui/src/qTabMeasurement.cpp
index cfd1698d1..702f5ebb3 100755
--- a/slsDetectorGui/src/qTabMeasurement.cpp
+++ b/slsDetectorGui/src/qTabMeasurement.cpp
@@ -18,7 +18,6 @@ qTabMeasurement::qTabMeasurement(QWidget *parent, sls::Detector *detector, qDraw
 }
 
 qTabMeasurement::~qTabMeasurement() {
-	if (progressTimer)
 		delete progressTimer;
 }
 
diff --git a/slsDetectorGui/src/qTabMessages.cpp b/slsDetectorGui/src/qTabMessages.cpp
index 397cb7c60..a813c5d7b 100755
--- a/slsDetectorGui/src/qTabMessages.cpp
+++ b/slsDetectorGui/src/qTabMessages.cpp
@@ -19,8 +19,7 @@ qTabMessages::qTabMessages(QWidget *parent) : QWidget(parent) {
 
 qTabMessages::~qTabMessages() {
     process->close();
-    if (process)
-        delete process;
+    delete process;
 }
 
 void qTabMessages::SetupWidgetWindow() {
diff --git a/slsDetectorGui/src/qTabPlot.cpp b/slsDetectorGui/src/qTabPlot.cpp
index 83703e364..f6d23bbec 100755
--- a/slsDetectorGui/src/qTabPlot.cpp
+++ b/slsDetectorGui/src/qTabPlot.cpp
@@ -27,8 +27,7 @@ qTabPlot::qTabPlot(QWidget *parent, sls::Detector *detector, qDrawPlot *p) :
 }
 
 qTabPlot::~qTabPlot() {
-    if (btnGroupPlotType)
-        delete btnGroupPlotType;
+    delete btnGroupPlotType;
 }
 
 void qTabPlot::SetupWidgetWindow() {
diff --git a/slsDetectorGui/src/qTabSettings.cpp b/slsDetectorGui/src/qTabSettings.cpp
index 59172de8f..6d4ddad93 100755
--- a/slsDetectorGui/src/qTabSettings.cpp
+++ b/slsDetectorGui/src/qTabSettings.cpp
@@ -40,12 +40,9 @@ void qTabSettings::SetupWidgetWindow() {
         SetupDetectorSettings();
     }
     spinThreshold->setValue(-1);
-
     Initialization();
-    
     // default for the disabled
     GetDynamicRange();
-
     Refresh();
 }