diff --git a/cosipy/data_io/ReadTraTest.py b/cosipy/data_io/ReadTraTest.py
index 5fbaa94b..681049e1 100644
--- a/cosipy/data_io/ReadTraTest.py
+++ b/cosipy/data_io/ReadTraTest.py
@@ -25,8 +25,6 @@ def read_tra_old(self,make_plots=True):
         
         """Reads in MEGAlib .tra (or .tra.gz) file.
        
-        Extended Summary
-        ----------------
         This method uses MEGAlib to read events from the tra file. 
         This is used to compare to the new event reader, which is 
         independent of MEGAlib. 
@@ -41,17 +39,17 @@ def read_tra_old(self,make_plots=True):
         -------
         cosi_dataset : dict
             Returns COSI dataset as a dictionary of the form:
-            cosi_dataset = {'Full filename':self.data_file,
-                        'Energies':erg,
-                        'TimeTags':tt,
-                        'Xpointings':np.array([lonX,latX]).T,
-                        'Ypointings':np.array([lonY,latY]).T,
-                        'Zpointings':np.array([lonZ,latZ]).T,
-                        'Phi':phi,
-                        'Chi local':chi_loc,
-                        'Psi local':psi_loc,
-                        'Distance':dist,
-                        'Chi galactic':chi_gal,
+            cosi_dataset = {'Full filename':self.data_file,\
+                        'Energies':erg,\
+                        'TimeTags':tt,\
+                        'Xpointings':np.array([lonX,latX]).T,\
+                        'Ypointings':np.array([lonY,latY]).T,\
+                        'Zpointings':np.array([lonZ,latZ]).T,\
+                        'Phi':phi,\
+                        'Chi local':chi_loc,\
+                        'Psi local':psi_loc,\
+                        'Distance':dist,\
+                        'Chi galactic':chi_gal,\
                         'Psi galactic':psi_gal}
         
         Note
diff --git a/cosipy/data_io/UnBinnedData.py b/cosipy/data_io/UnBinnedData.py
index 1632a229..1a32ed46 100644
--- a/cosipy/data_io/UnBinnedData.py
+++ b/cosipy/data_io/UnBinnedData.py
@@ -63,27 +63,27 @@ def read_tra(self, output_name=None, run_test=False, use_ori=False,
         cosi_dataset, dict
             The returned dictionary contains the COSI dataset, which
             has the form:
-            cosi_dataset = {'Energies':erg,
-                        'TimeTags':tt,
-                        'Xpointings':np.array([lonX,latX]).T,
-                        'Ypointings':np.array([lonY,latY]).T,
-                        'Zpointings':np.array([lonZ,latZ]).T,
-                        'Phi':phi,
-                        'Chi local':chi_loc,
-                        'Psi local':psi_loc,
-                        'Distance':dist,
-                        'Chi galactic':chi_gal,
-                        'Psi galactic':psi_gal} 
-            Arrays contain unbinned photon data.
+            cosi_dataset = {'Energies':erg,\
+                        'TimeTags':tt,\
+                        'Xpointings':np.array([lonX,latX]).T,\
+                        'Ypointings':np.array([lonY,latY]).T,\
+                        'Zpointings':np.array([lonZ,latZ]).T,\
+                        'Phi':phi,\
+                        'Chi local':chi_loc,\
+                        'Psi local':psi_loc,\
+                        'Distance':dist,\
+                        'Chi galactic':chi_gal,\
+                        'Psi galactic':psi_gal}\
+            Arrays contain unbinned photon data. 
         
         Notes
         -----
-            The current code is only able to handle data with Compton 
-            events. It will need to be modified to handle single-site 
-            and pair events. 
+        The current code is only able to handle data with Compton 
+        events. It will need to be modified to handle single-site 
+        and pair events. 
 
-            This method sets the instance attribute, cosi_dataset, 
-            but it does not explicitly return this.  
+        This method sets the instance attribute, cosi_dataset, 
+        but it does not explicitly return this.  
         """
    
         start_time = time.time()
@@ -376,8 +376,6 @@ def instrument_pointing(self):
 
         """Get pointing information from ori file.
         
-        Extended Summary
-        ---------------
         Initializes interpolated functions for lonx, latx, lonz, latz 
         in radians.
         
@@ -555,8 +553,8 @@ def get_dict_from_hdf5(self, input_hdf5):
 
         """Constructs dictionary from input hdf5 file
         
-        Parameter
-        ---------
+        Parameters
+        ----------
         input_hdf5 : str
             Name of input hdf5 file. 
 
diff --git a/cosipy/spacecraftfile/SpacecraftFile.py b/cosipy/spacecraftfile/SpacecraftFile.py
index 3b8ed1fb..877de567 100644
--- a/cosipy/spacecraftfile/SpacecraftFile.py
+++ b/cosipy/spacecraftfile/SpacecraftFile.py
@@ -445,7 +445,7 @@ def get_scatt_map(self,
         """
         Bin the spacecraft attitude history into a 4D histogram that contains the accumulated time the axes of the spacecraft where looking at a given direction. 
 
-        Paremeters
+        Parameters
         ----------
         nside : int
             The nside of the scatt map.
diff --git a/cosipy/util/data_fetching.py b/cosipy/util/data_fetching.py
index bef3e66c..8823b894 100644
--- a/cosipy/util/data_fetching.py
+++ b/cosipy/util/data_fetching.py
@@ -1,5 +1,6 @@
 import os
 from awscli.clidriver import create_clidriver
+from pathlib import Path
 
 def fetch_wasabi_file(file,
                       output = None,
@@ -31,16 +32,19 @@ def fetch_wasabi_file(file,
     if output is None:
         output = file.split('/')[-1]
 
-    if os.path.exists(output) and not override:
+    output = Path(output)    
+        
+    if output.exists() and not override:
         raise RuntimeError(f"File {output} already exists.")
 
     cli = create_clidriver()
 
     cli.session.set_credentials(access_key, secret_key)
-    
-    cli.main(['s3api', 'get-object',
-              '--bucket', bucket,
-              '--key', file,
-              '--endpoint-url', endpoint,
-              output])
+    command = ['s3api', 'get-object',
+               '--bucket', bucket,
+               '--key', file,
+               '--endpoint-url', endpoint,
+               str(output)]
+
+    cli.main(command)
 
diff --git a/docs/conf.py b/docs/conf.py
index 3d93c3f6..a8db9f71 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -66,6 +66,7 @@
                         'pandas',
                         'tqdm',
                         'scipy',
+                        'psutil',
                         'awscli']
 
 # There seems to be a conflict between unittest.mock (used by sphinx) and metaclasses