diff --git a/slsReceiverSoftware/src/DataProcessor.cpp b/slsReceiverSoftware/src/DataProcessor.cpp
index ad8a89a77..e45a29a13 100755
--- a/slsReceiverSoftware/src/DataProcessor.cpp
+++ b/slsReceiverSoftware/src/DataProcessor.cpp
@@ -29,13 +29,9 @@ DataProcessor::DataProcessor(int ind, detectorType dtype, Fifo* f,
 		uint32_t* freq, uint32_t* timer,
 		bool* fp, bool* act, bool* depaden, bool* sm, bool* qe,
 		std::vector <int> * cdl, int* cdo, int* cad) :
-
 		ThreadObject(ind, TypeName),
-		runningFlag(false),
-		generalData(nullptr),
 		fifo(f),
 		myDetectorType(dtype),
-		file(nullptr),
 		dataStreamEnable(dsEnable),
 		fileFormatType(ftype),
 		fileWriteEnable(fwenable),
@@ -43,7 +39,6 @@ DataProcessor::DataProcessor(int ind, detectorType dtype, Fifo* f,
 		dynamicRange(dr),
 		streamingFrequency(freq),
 		streamingTimerInMs(timer),
-		currentFreqCount(0),
 		activated(act),
 		deactivatedPaddingEnable(depaden),
         silentMode(sm),
@@ -51,14 +46,7 @@ DataProcessor::DataProcessor(int ind, detectorType dtype, Fifo* f,
 		framePadding(fp),
 		ctbDbitList(cdl),
 		ctbDbitOffset(cdo),
-		ctbAnalogDataBytes(cad),
-		startedFlag(false),
-		firstIndex(0),
-		numFramesCaught(0),
-		currentFrameIndex(0),
-		rawDataReadyCallBack(nullptr),
-		rawDataModifyReadyCallBack(nullptr),
-		pRawDataReady(nullptr)
+		ctbAnalogDataBytes(cad)
 {
     LOG(logDEBUG) << "DataProcessor " << ind << " created";
 	memset((void*)&timerBegin, 0, sizeof(timespec));
@@ -71,10 +59,6 @@ DataProcessor::~DataProcessor() {
 
 /** getters */
 
-bool DataProcessor::IsRunning() {
-	return runningFlag;
-}
-
 bool DataProcessor::GetStartedFlag(){
 	return startedFlag;
 }
@@ -91,18 +75,6 @@ uint64_t DataProcessor::GetProcessedIndex() {
 	return currentFrameIndex - firstIndex;
 }
 
-
-
-/** setters */
-void DataProcessor::StartRunning() {
-    runningFlag = true;
-}
-
-
-void DataProcessor::StopRunning() {
-    runningFlag = false;
-}
-
 void DataProcessor::SetFifo(Fifo* f) {
 	fifo = f;
 }
diff --git a/slsReceiverSoftware/src/DataProcessor.h b/slsReceiverSoftware/src/DataProcessor.h
index b6cdbd21d..64111ebdb 100755
--- a/slsReceiverSoftware/src/DataProcessor.h
+++ b/slsReceiverSoftware/src/DataProcessor.h
@@ -59,11 +59,6 @@ class DataProcessor : private virtual slsDetectorDefs, public ThreadObject {
 
 
 	//*** getters ***
-    /**
-     * Returns if the thread is currently running
-     * @returns true if thread is running, else false
-     */
-    bool IsRunning() override;
 
 	/**
 	 * Get acquisition started flag
@@ -89,17 +84,6 @@ class DataProcessor : private virtual slsDetectorDefs, public ThreadObject {
 	 */
 	uint64_t GetProcessedIndex();
 
-	//*** setters ***
-	/**
-	 * Set bit in RunningMask to allow thread to run
-	 */
-	void StartRunning();
-
-	/**
-	 * Reset bit in RunningMask to prevent thread from running
-	 */
-	void StopRunning();
-
 	/**
 	 * Set Fifo pointer to the one given
 	 * @param f address of Fifo pointer
@@ -254,11 +238,8 @@ class DataProcessor : private virtual slsDetectorDefs, public ThreadObject {
 	/** type of thread */
 	static const std::string TypeName;
 
-    /** Object running status */
-    std::atomic<bool> runningFlag;
-
 	/** GeneralData (Detector Data) object */
-	const GeneralData* generalData;
+	const GeneralData* generalData{nullptr};
 
 	/** Fifo structure */
 	Fifo* fifo;
@@ -269,7 +250,7 @@ class DataProcessor : private virtual slsDetectorDefs, public ThreadObject {
 	detectorType myDetectorType;
 
 	/** File writer implemented as binary or hdf5 File */
-	File* file;
+	File* file{nullptr};
 
 	/** Data Stream Enable */
 	bool* dataStreamEnable;
@@ -293,7 +274,7 @@ class DataProcessor : private virtual slsDetectorDefs, public ThreadObject {
 	uint32_t* streamingTimerInMs;
 
 	/** Current frequency count */
-	uint32_t currentFreqCount;
+	uint32_t currentFreqCount{0};
 
 	/** timer beginning stamp for random streaming */
 	struct timespec timerBegin;
@@ -324,21 +305,18 @@ class DataProcessor : private virtual slsDetectorDefs, public ThreadObject {
 
 	//acquisition start
 	/** Aquisition Started flag */
-	bool startedFlag;
+	bool startedFlag{false};
 
 	/** Frame Number of First Frame */
-	uint64_t firstIndex;
+	uint64_t firstIndex{0};
 
 
 	//for statistics
 	/** Number of complete frames caught */
-	uint64_t numFramesCaught;
+	uint64_t numFramesCaught{0};
 
 	/** Frame Number of latest processed frame number */
-	uint64_t currentFrameIndex;
-
-
-
+	uint64_t currentFrameIndex{0};
 
 	//call back
     /**
@@ -349,7 +327,7 @@ class DataProcessor : private virtual slsDetectorDefs, public ThreadObject {
      * dataSize in bytes is the size of the data in bytes.
      */
     void (*rawDataReadyCallBack)(char*,
-            char*, uint32_t, void*);
+            char*, uint32_t, void*) = nullptr;
 
     /**
      * Call back for raw data (modified)
@@ -359,9 +337,9 @@ class DataProcessor : private virtual slsDetectorDefs, public ThreadObject {
      * revDatasize is the reference of data size in bytes. Can be modified to the new size to be written/streamed. (only smaller value).
      */
     void (*rawDataModifyReadyCallBack)(char*,
-            char*, uint32_t &, void*);
+            char*, uint32_t &, void*) = nullptr;
 		
-	void *pRawDataReady;
+	void *pRawDataReady{nullptr};
 
 
 
diff --git a/slsReceiverSoftware/src/DataStreamer.cpp b/slsReceiverSoftware/src/DataStreamer.cpp
index 2b840dab1..9c9b5f1a1 100755
--- a/slsReceiverSoftware/src/DataStreamer.cpp
+++ b/slsReceiverSoftware/src/DataStreamer.cpp
@@ -19,18 +19,11 @@ const std::string DataStreamer::TypeName = "DataStreamer";
 DataStreamer::DataStreamer(int ind, Fifo* f, uint32_t* dr, ROI* r,
 		uint64_t* fi, int fd, int* nd, bool* qe, uint64_t* tot) :
 		ThreadObject(ind, TypeName),
-		runningFlag(0),
-		generalData(nullptr),
 		fifo(f),
-		zmqSocket(nullptr),
 		dynamicRange(dr),
 		roi(r),
-		adcConfigured(-1),
 		fileIndex(fi),
 		flippedDataX(fd),
-		startedFlag(false),
-		firstIndex(0),
-		completeBuffer(nullptr),
 		quadEnable(qe),
 		totalNumFrames(tot)
 {
@@ -46,23 +39,6 @@ DataStreamer::~DataStreamer() {
 	delete [] completeBuffer;
 }
 
-/** getters */
-
-bool DataStreamer::IsRunning() {
-	return runningFlag;
-}
-
-
-/** setters */
-void DataStreamer::StartRunning() {
-    runningFlag = true;
-}
-
-
-void DataStreamer::StopRunning() {
-    runningFlag = false;
-}
-
 void DataStreamer::SetFifo(Fifo* f) {
 	fifo = f;
 }
diff --git a/slsReceiverSoftware/src/DataStreamer.h b/slsReceiverSoftware/src/DataStreamer.h
index 4a31fa550..8b7d81881 100755
--- a/slsReceiverSoftware/src/DataStreamer.h
+++ b/slsReceiverSoftware/src/DataStreamer.h
@@ -42,25 +42,6 @@ class DataStreamer : private virtual slsDetectorDefs, public ThreadObject {
 	 */
 	~DataStreamer();
 
-	//*** getters ***
-    /**
-     * Returns if the thread is currently running
-     * @returns true if thread is running, else false
-     */
-    bool IsRunning();
-
-
-	//*** setters ***
-	/**
-	 * Set bit in RunningMask to allow thread to run
-	 */
-	void StartRunning();
-
-	/**
-	 * Reset bit in RunningMask to prevent thread from running
-	 */
-	void StopRunning();
-
 	/**
 	 * Set Fifo pointer to the one given
 	 * @param f address of Fifo pointer
@@ -158,19 +139,14 @@ class DataStreamer : private virtual slsDetectorDefs, public ThreadObject {
 	/** type of thread */
 	static const std::string TypeName;
 
-    /** Object running status */
-    bool runningFlag;
-
 	/** GeneralData (Detector Data) object */
-	const GeneralData* generalData;
+	const GeneralData* generalData{nullptr};
 
 	/** Fifo structure */
 	Fifo* fifo;
 
-
-
 	/** ZMQ Socket - Receiver to Client */
-	ZmqSocket* zmqSocket;
+	ZmqSocket* zmqSocket{nullptr};
 
 	/** Pointer to dynamic range */
 	uint32_t* dynamicRange;
@@ -179,7 +155,7 @@ class DataStreamer : private virtual slsDetectorDefs, public ThreadObject {
 	ROI* roi;
 
 	/** adc Configured */
-	int adcConfigured;
+	int adcConfigured{-1};
 
 	/** Pointer to file index */
 	uint64_t* fileIndex;
@@ -191,16 +167,16 @@ class DataStreamer : private virtual slsDetectorDefs, public ThreadObject {
 	std::map<std::string, std::string> additionJsonHeader;
 
 	/** Aquisition Started flag */
-	bool startedFlag;
+	bool startedFlag{nullptr};
 
 	/** Frame Number of First Frame */
-	uint64_t firstIndex;
+	uint64_t firstIndex{0};
 
 	/* File name to stream */
 	std::string fileNametoStream;
 
 	/** Complete buffer used for roi, eg. shortGotthard */
-	char* completeBuffer;
+	char* completeBuffer{nullptr};
 
 	/** Number of Detectors in X and Y dimension */
 	int numDet[2];
diff --git a/slsReceiverSoftware/src/Listener.cpp b/slsReceiverSoftware/src/Listener.cpp
index 0416e90d0..48b9e133d 100755
--- a/slsReceiverSoftware/src/Listener.cpp
+++ b/slsReceiverSoftware/src/Listener.cpp
@@ -26,12 +26,9 @@ Listener::Listener(int ind, detectorType dtype, Fifo* f, std::atomic<runStatus>*
         int64_t* us, int64_t* as, uint32_t* fpf,
 		frameDiscardPolicy* fdp, bool* act, bool* depaden, bool* sm) :
 		ThreadObject(ind, TypeName),
-		runningFlag(0),
-		generalData(nullptr),
 		fifo(f),
 		myDetectorType(dtype),
 		status(s),
-		udpSocket(nullptr),
 		udpPortNumber(portno),
 		eth(e),
 		numImages(nf),
@@ -42,19 +39,7 @@ Listener::Listener(int ind, detectorType dtype, Fifo* f, std::atomic<runStatus>*
 		frameDiscardMode(fdp),
 		activated(act),
 		deactivatedPaddingEnable(depaden),
-		silentMode(sm),
-		row(0),
-		column(0),
-		startedFlag(false),
-		firstIndex(0),
-		numPacketsCaught(0),
-		lastCaughtFrameIndex(0),
-		currentFrameIndex(0),
-		carryOverFlag(0),
-		udpSocketAlive(0),
-		numPacketsStatistic(0),
-		numFramesStatistic(0),
-		oddStartingPacket(true)
+		silentMode(sm)
 {
 	LOG(logDEBUG) << "Listener " << ind << " created";
 }
@@ -67,20 +52,15 @@ Listener::~Listener() {
 	} 
 }
 
-/** getters */
-bool Listener::IsRunning() {
-	return runningFlag;
-}
-
-uint64_t Listener::GetPacketsCaught() {
+uint64_t Listener::GetPacketsCaught() const {
 	return numPacketsCaught;
 }
 
-uint64_t Listener::GetLastFrameIndexCaught() {
+uint64_t Listener::GetLastFrameIndexCaught() const {
 	return lastCaughtFrameIndex;
 }
 
-uint64_t Listener::GetNumMissingPacket(bool stoppedFlag, uint64_t numPackets) {
+uint64_t Listener::GetNumMissingPacket(bool stoppedFlag, uint64_t numPackets) const {
 	if (!stoppedFlag) {
 		return (numPackets - numPacketsCaught);
 	}
@@ -90,22 +70,10 @@ uint64_t Listener::GetNumMissingPacket(bool stoppedFlag, uint64_t numPackets) {
 	return (lastCaughtFrameIndex - firstIndex + 1) * generalData->packetsPerFrame - numPacketsCaught;
 }
 
-/** setters */
-void Listener::StartRunning() {
-    runningFlag = true;
-}
-
-
-void Listener::StopRunning() {
-    runningFlag = false;
-}
-
-
 void Listener::SetFifo(Fifo* f) {
 	fifo = f;
 }
 
-
 void Listener::ResetParametersforNewAcquisition() {
     runningFlag = false;
 	startedFlag = false;
diff --git a/slsReceiverSoftware/src/Listener.h b/slsReceiverSoftware/src/Listener.h
index 83e788cd1..bd8d382a4 100755
--- a/slsReceiverSoftware/src/Listener.h
+++ b/slsReceiverSoftware/src/Listener.h
@@ -53,40 +53,20 @@ class Listener : private virtual slsDetectorDefs, public ThreadObject {
 	 */
 	~Listener();
 
-
-	//*** getters ***
-    /**
-     * Returns if the thread is currently running
-     * @returns true if thread is running, else false
-     */
-    bool IsRunning() override;
-
 	/**
 	 * Get Packets caught 
 	 * @return Packets caught 
 	 */
-	uint64_t GetPacketsCaught();
+	uint64_t GetPacketsCaught() const;
 
 	/**
 	 * Get Last Frame index caught
 	 * @return last frame index caught
 	 */
-	uint64_t GetLastFrameIndexCaught();
+	uint64_t GetLastFrameIndexCaught() const;
 
 	/** Get  number of missing packets */
-	uint64_t GetNumMissingPacket(bool stoppedFlag, uint64_t numPackets);
-
-
-	//*** setters ***
-	/**
-	 * Set bit in RunningMask to allow thread to run
-	 */
-	void StartRunning();
-
-	/**
-	 * Reset bit in RunningMask to prevent thread from running
-	 */
-	void StopRunning();
+	uint64_t GetNumMissingPacket(bool stoppedFlag, uint64_t numPackets) const;
 
 	/**
 	 * Set Fifo pointer to the one given
@@ -140,7 +120,7 @@ class Listener : private virtual slsDetectorDefs, public ThreadObject {
 	void RecordFirstIndex(uint64_t fnum);
 
 	/**
-	 * Thread Exeution for Listener Class
+	 * Thread Execution for Listener Class
 	 * Pop free addresses, listen to udp socket,
 	 * write to memory & push the address into fifo
 	 */
@@ -168,16 +148,11 @@ class Listener : private virtual slsDetectorDefs, public ThreadObject {
 	 */
 	void PrintFifoStatistics();
 
-
-
 	/** type of thread */
 	static const std::string TypeName;
 
-	/** Object running status */
-	std::atomic<bool> runningFlag;
-
 	/** GeneralData (Detector Data) object */
-	GeneralData* generalData;
+	GeneralData* generalData{nullptr};
 
 	/** Fifo structure */
 	Fifo* fifo;
@@ -190,7 +165,7 @@ class Listener : private virtual slsDetectorDefs, public ThreadObject {
 	std::atomic<runStatus>* status;
 
 	/** UDP Socket - Detector to Receiver */
-	std::unique_ptr<sls::UdpRxSocket> udpSocket;
+	std::unique_ptr<sls::UdpRxSocket> udpSocket{nullptr};
 
 	/** UDP Port Number */
 	uint32_t* udpPortNumber;
@@ -228,36 +203,34 @@ class Listener : private virtual slsDetectorDefs, public ThreadObject {
 	/** row hardcoded as 1D or 2d,
 	 * if detector does not send them yet or
 	 * missing packets/deactivated (eiger/jungfrau sends 2d pos) **/
-	uint16_t row;
+	uint16_t row{0};
 
 	/** column hardcoded as 2D,
 	 * deactivated eiger/missing packets (eiger/jungfrau sends 2d pos) **/
-	uint16_t column;
-
+	uint16_t column{0};
 
 	// acquisition start
 	/** Aquisition Started flag */
-	std::atomic<bool> startedFlag;
+	std::atomic<bool> startedFlag{false};
 
 	/** Frame Number of First Frame  */
-	uint64_t firstIndex;
+	uint64_t firstIndex{0};
 
 	// for acquisition summary
 	/** Number of complete Packets caught */
-	std::atomic<uint64_t> numPacketsCaught;
+	std::atomic<uint64_t> numPacketsCaught{0};
 
 	/** Last Frame Index caught  from udp network */
-	std::atomic<uint64_t> lastCaughtFrameIndex;
-
+	std::atomic<uint64_t> lastCaughtFrameIndex{0};
 
 	// parameters to acquire image
 	/** Current Frame Index, default value is 0
 	 * ( always check startedFlag for validity first)
 	 */
-	uint64_t currentFrameIndex;
+	uint64_t currentFrameIndex{0};
 
 	/** True if there is a packet carry over from previous Image */
-	bool carryOverFlag;
+	bool carryOverFlag{false};
 
 	/** Carry over packet buffer */
 	std::unique_ptr<char []> carryOverPacket;
@@ -266,22 +239,22 @@ class Listener : private virtual slsDetectorDefs, public ThreadObject {
 	std::unique_ptr<char []> listeningPacket;
 
 	/** if the udp socket is connected */
-	std::atomic<bool> udpSocketAlive;
+	std::atomic<bool> udpSocketAlive{false};
 
-    /** Semaphore to synchonize deleting udp socket */
+    /** Semaphore to synchronize deleting udp socket */
     sem_t semaphore_socket;
 
-	// for print progress during acqusition
+	// for print progress during acquisition
 	/** number of packets for statistic */
-	uint32_t numPacketsStatistic;
+	uint32_t numPacketsStatistic{0};
 
 	/** number of images for statistic */
-	uint32_t numFramesStatistic;
+	uint32_t numFramesStatistic{0};
 
     /**
-     * starting packet number is odd or evern, accordingly increment frame number
+     * starting packet number is odd or even, accordingly increment frame number
      * to get first packet number as 0
      * (pecific to gotthard, can vary between modules, hence defined here) */
-    bool oddStartingPacket;
+    bool oddStartingPacket{true};
 };
 
diff --git a/slsReceiverSoftware/src/ThreadObject.cpp b/slsReceiverSoftware/src/ThreadObject.cpp
index e78b5e3ca..08d2a5a67 100755
--- a/slsReceiverSoftware/src/ThreadObject.cpp
+++ b/slsReceiverSoftware/src/ThreadObject.cpp
@@ -36,6 +36,17 @@ ThreadObject::~ThreadObject() {
 	sem_destroy(&semaphore);
 }
 
+bool ThreadObject::IsRunning() const{
+    return runningFlag;
+}
+
+void ThreadObject::StartRunning() {
+    runningFlag = true;
+}
+
+void ThreadObject::StopRunning() {
+    runningFlag = false;
+}
 
 void ThreadObject::RunningThread() {
 	LOG(logINFOBLUE) << "Created [ " << type << "Thread " << index << ", Tid: " << syscall(SYS_gettid) << "]";
diff --git a/slsReceiverSoftware/src/ThreadObject.h b/slsReceiverSoftware/src/ThreadObject.h
index cc9ffddf1..624dec1cf 100755
--- a/slsReceiverSoftware/src/ThreadObject.h
+++ b/slsReceiverSoftware/src/ThreadObject.h
@@ -21,7 +21,9 @@ class ThreadObject : private virtual slsDetectorDefs {
  public:
 	ThreadObject(int threadIndex, std::string threadType);
 	virtual ~ThreadObject();
-	virtual bool IsRunning() = 0;
+	bool IsRunning() const;
+	void StartRunning();
+	void StopRunning();
 	void Continue();
 	void SetThreadPriority(int priority);
 
@@ -41,6 +43,7 @@ class ThreadObject : private virtual slsDetectorDefs {
 	int index{0};
 	std::string type;
 	std::atomic<bool> killThread{false};
+	std::atomic<bool> runningFlag{false};
 	std::unique_ptr<std::thread> threadObject;
 	sem_t semaphore;
 };