diff --git a/cscripts/csiactdata.py b/cscripts/csiactdata.py
index d00f5e2..c396292 100755
--- a/cscripts/csiactdata.py
+++ b/cscripts/csiactdata.py
@@ -40,9 +40,10 @@ class csiactdata(ctools.cscript):
         Constructor.
         """
         # Set name
-        self.name     = "csiactdata"
-        self.version  = "1.0.0"
-        self.datapath = os.getenv("VHEFITS","")
+        self.name      = "csiactdata"
+        self.version   = "1.0.0"
+        self.datapath  = os.getenv("VHEFITS","")
+        self.prodnames = []
 
         # Make sure that parfile exists
         file = self.parfile()
@@ -156,6 +157,9 @@ class csiactdata(ctools.cscript):
         data      = json.loads(json_data)    
         configs   = data["datasets"]
         
+        # Initialise array for available names
+        self.prodnames = []
+        
         # Loop over configs and display unavailable storage first        
         for config in configs:
             
@@ -204,6 +208,9 @@ class csiactdata(ctools.cscript):
                 self.log(str(config["hduindx"]))
                 self.log("\n") 
                 
+                # Append to available names
+                self.prodnames.append(str(config["name"]))
+                
                 # Print additional information
                 for key in config:
                     if key in ["name","hduindx","obsindx"]:
@@ -215,6 +222,14 @@ class csiactdata(ctools.cscript):
         # Return
         return       
 
+    def names(self):
+        """ 
+        Return available FITS production names
+        """
+        
+        # Return 
+        return self.prodnames
+
 # ======================== #
 # Main routine entry point #
 # ======================== #
diff --git a/cscripts/csiactobs.py b/cscripts/csiactobs.py
index 452a446..af1805a 100755
--- a/cscripts/csiactobs.py
+++ b/cscripts/csiactobs.py
@@ -51,6 +51,7 @@ class csiactobs(ctools.cscript):
         self.inmodels  = None
         self.xml       = gammalib.GXml()
         self.models    = gammalib.GModels()
+        self.m_runlist = []
 
         # Make sure that parfile exists
         file = self.parfile()
@@ -136,9 +137,27 @@ class csiactobs(ctools.cscript):
         # Expand environment
         self.datapath = gammalib.expand_env(self.datapath)
         
-        # Read user parameters  
+        # Read FITS production
         self.m_prodname    = self["prodname"].string()
-        self.m_runlistfile = self["infile"].filename()
+        
+        # Read runlist file if list not already filled
+        if len(self.m_runlist) == 0:
+            
+            # Get file name
+            self.m_runlistfile = self["infile"].filename()
+            
+            # Read runlist from file
+            runfile = open(self.m_runlistfile.url())
+            for line in runfile.readlines():
+                if len(line) == 0:
+                    continue
+                if line[0] == '#':
+                    continue
+                if len(line.split()) > 0:
+                    self.m_runlist.append(line.split()[0])
+            runfile.close()
+        
+        # Read number of background parameters
         self.m_bkgpars     = self["bkgpars"].integer()
           
         # Output model file
@@ -225,13 +244,13 @@ class csiactobs(ctools.cscript):
         Set observation list
         """
         
-        # Type check
-        if isinstance(runlist, list):
+        # Check if convertable to a python list
+        try:
             
             # Store a copy of input argument
-            self.runlist = list(runlist)
+            self.m_runlist = list(runlist)
             
-        else:
+        except:
             
             # raise error if wrong type detected
             raise RuntimeError("Argument of csiactobs.runlist() must be of type 'list'")
@@ -409,30 +428,16 @@ class csiactobs(ctools.cscript):
         self.xml.append(gammalib.GXmlElement("observation_list title=\"observation list\""))
         lib = self.xml.element("observation_list", 0)
 
-        # Read runlist from file
-        runlist = []
-        runfile = open(self.m_runlistfile.url())
-        for line in runfile.readlines():
-            if len(line) == 0:
-                continue
-            if line[0] == '#':
-                continue
-            if len(line.split()) > 0:
-                runlist.append(line.split()[0])
-            else:
-                runlist.append('')
-        runfile.close()
-
         # Log output
         if self.logTerse():
             self.log("\n")
-            self.log.header1("Looping over "+str(len(runlist))+" runs")
+            self.log.header1("Looping over "+str(len(self.m_runlist))+" runs")
 
         # Initialise energy range values for logging
         self.m_ebounds.clear()
 
         # Loop over runs
-        for obs_id in runlist:
+        for obs_id in self.m_runlist:
 
             # Create selection string
             obs_selection = "[OBS_ID=="+str(obs_id)+"]"
diff --git a/cscripts/csobsinfo.py b/cscripts/csobsinfo.py
index 3d96700..0dad0d3 100755
--- a/cscripts/csobsinfo.py
+++ b/cscripts/csobsinfo.py
@@ -40,6 +40,14 @@ class csobsinfo(ctools.cscript):
         self.name    = "csobsinfo"
         self.version = "1.1.0"
 
+        # Initialise some members
+        if len(argv) > 0 and isinstance(argv[0],gammalib.GObservations):
+            self.obs = argv[0]
+            argv     = argv[1:]
+        else:      
+            self.obs = gammalib.GObservations()
+            self.obs.clear()   
+
         # Make sure that parfile exists
         file = self.parfile()
 
@@ -99,9 +107,10 @@ class csobsinfo(ctools.cscript):
         """
         Get parameters from parfile and setup the observation.
         """
-        # Get parameters     
-        self.require_inobs("csobsinfo::get_parameters")
-        self.obs = self.get_observations(False)
+        # Get parameters   
+        if self.obs.size() == 0:  
+            self.require_inobs("csobsinfo::get_parameters")
+            self.obs = self.get_observations(False)
         
         # Initialise object position
         self.obj_dir = gammalib.GSkyDir()