diff --git a/config/variables.properties b/config/variables.properties
index 2588fa16..56823025 100644
--- a/config/variables.properties
+++ b/config/variables.properties
@@ -1,4 +1,4 @@
-#Mon May 31 17:13:04 CEST 2021
+#Mon May 31 18:31:00 CEST 2021
 LastRunDate=210531
-FileSequentialNumber=7427
-DaySequentialNumber=11
+FileSequentialNumber=7434
+DaySequentialNumber=18
diff --git a/script/HoloFlyScan.py b/script/HoloFlyScan.py
index b1cbbe0f..223c6f13 100644
--- a/script/HoloFlyScan.py
+++ b/script/HoloFlyScan.py
@@ -31,6 +31,7 @@ SENSORS = (Counts, Scienta.dataMatrix, SampleCurrent, RefCurrent, MachineCurrent
 adjust_sensors()
 set_adc_averaging()
 set_preference(Preference.PLOT_TYPES, {'Scienta spectrum':1})
+set_exec_pars(compression=True)
 
 # time per scienta acquisition in seconds
 time1 = time.time()
diff --git a/script/HoloScan.py b/script/HoloScan.py
index f3520d74..1c7d0cc5 100644
--- a/script/HoloScan.py
+++ b/script/HoloScan.py
@@ -16,6 +16,7 @@ ZIGZAG (BOOLEAN)
 adjust_sensors()
 set_adc_averaging()
 set_preference(Preference.PLOT_TYPES, {'Scienta spectrum':1})
+set_exec_pars(compression=True)
 
 try:
     ascan((ManipulatorPhi, ManipulatorTheta), SENSORS, (PHI_RANGE[0], THETA_RANGE[0]), (PHI_RANGE[1], THETA_RANGE[1]), STEPS, LATENCY, RELATIVE, zigzag = ZIGZAG, \
diff --git a/script/ManipulatorScan.py b/script/ManipulatorScan.py
index 4259b968..7fa8c1fb 100644
--- a/script/ManipulatorScan.py
+++ b/script/ManipulatorScan.py
@@ -14,6 +14,7 @@ FLY_SCAN (BOOLEAN)
 adjust_sensors()
 set_adc_averaging()
 set_preference(Preference.PLOT_TYPES, {'Scienta spectrum':1})
+set_exec_pars(compression=True)
 
 try:
     if FLY_SCAN:        
diff --git a/script/ManipulatorXYScan.py b/script/ManipulatorXYScan.py
index 49449ef4..abbf0697 100644
--- a/script/ManipulatorXYScan.py
+++ b/script/ManipulatorXYScan.py
@@ -31,6 +31,7 @@ RELATIVE = True
 
 adjust_sensors()
 set_adc_averaging()
+set_exec_pars(compression=True)
 
 try:
     lscan(MOTOR, SENSORS, STARTPOS, ENDPOS, STEPS, LATENCY, RELATIVE, before_read=before_readout, after_read = after_readout)
diff --git a/script/ManipulatorYZFlyScan.py b/script/ManipulatorYZFlyScan.py
index 1e00deb3..6cbfda3d 100644
--- a/script/ManipulatorYZFlyScan.py
+++ b/script/ManipulatorYZFlyScan.py
@@ -25,6 +25,7 @@ SENSORS = (Counts, Scienta.dataMatrix, SampleCurrent, RefCurrent, MachineCurrent
 
 adjust_sensors()
 set_adc_averaging()
+set_exec_pars(compression=True)
 
 # time per scienta acquisition in seconds
 time1 = time.time()
diff --git a/script/ManipulatorYZScan.py b/script/ManipulatorYZScan.py
index 5d4a325b..ce3c9bb2 100644
--- a/script/ManipulatorYZScan.py
+++ b/script/ManipulatorYZScan.py
@@ -25,6 +25,7 @@ RELATIVE = False
 adjust_sensors()
 set_adc_averaging()
 #set_preference(Preference.PLOT_TYPES, {'Scienta spectrum':1})
+set_exec_pars(compression=True)
 
 try:
     ascan(MOTORS, SENSORS, STARTPOS, ENDPOS, STEPS, LATENCY, RELATIVE, zigzag = ZIGZAG, before_read=before_readout, after_read = after_readout)
diff --git a/script/MultiRegionScan.py b/script/MultiRegionScan.py
index df50fab6..022f5083 100644
--- a/script/MultiRegionScan.py
+++ b/script/MultiRegionScan.py
@@ -82,6 +82,7 @@ CLOSE_SHUTTER_AT_END = True
 # --- DO NOT EDIT BELOW THIS LINE! ---
 
 set_exec_pars(keep=False)
+set_exec_pars(compression=True)
 
 def check_region(region):
     """
diff --git a/script/PhotonEnergy.py b/script/PhotonEnergy.py
index 16a48c94..03d3e190 100644
--- a/script/PhotonEnergy.py
+++ b/script/PhotonEnergy.py
@@ -27,6 +27,7 @@ else:
 adjust_sensors()
 set_adc_averaging()
 set_preference(Preference.PLOT_TYPES, {'Scienta spectrum':1})
+set_exec_pars(compression=True)
 
 try:
     vscan(writables, SENSORS, VECTOR, True, LATENCY,False, before_read=before_readout, after_read = after_readout)
diff --git a/script/XPSSpectrum.py b/script/XPSSpectrum.py
index f9d7f02e..5b230aa6 100644
--- a/script/XPSSpectrum.py
+++ b/script/XPSSpectrum.py
@@ -23,6 +23,7 @@ for cur_range in range(len(ranges)):
     ar = [round(r.min / r.vars[1]) * r.vars[1], round(r.max / r.vars[1]) * r.vars[1]]    
     adjusted_ranges.append(ar)
 
+set_exec_pars(compression=True)
 set_exec_pars(open = True)
 create_metadata_datasets()