diff --git a/dasscripts/dasconv.py b/dasscripts/dasconv.py
index cc0a044160db68df6a36eae3213dda7ddd0256b2..0c63e9d455ca9ad5a4a9aa6d2ee51cec7ea9e13b 100644
--- a/dasscripts/dasconv.py
+++ b/dasscripts/dasconv.py
@@ -51,38 +51,38 @@ def printmetadata(data):
         print(data)
 
 
-def str2date(dStr):
+def str2date(dstr):
     """Transform a string to a datetime.
 
-    :param dStr: A datetime in ISO format.
-    :type dStr: string
+    :param dstr: A datetime in ISO format.
+    :type dstr: string
     :return: A datetime represented the converted input.
-    :rtype: datetime
+    :rtype: datetime.datetime
     """
     # In case of empty string
-    if (dStr is None) or (not len(dStr)):
+    if (dstr is None) or (not len(dstr)):
         return None
 
-    dateParts = dStr.replace('-', ' ').replace('T', ' ')
-    dateParts = dateParts.replace(':', ' ').replace('.', ' ')
-    dateParts = dateParts.replace('Z', '').split()
+    dateparts = dstr.replace('-', ' ').replace('T', ' ')
+    dateparts = dateparts.replace(':', ' ').replace('.', ' ')
+    dateparts = dateparts.replace('Z', '').split()
     # Consider the case in which just the first digits of microseconds
     # are given and complete with 0's to have 6 digits
-    if len(dateParts) == 7:
-        dateParts[6] = dateParts[6] + '0' * (6 - len(dateParts[6]))
+    if len(dateparts) == 7:
+        dateparts[6] = dateparts[6] + '0' * (6 - len(dateparts[6]))
 
-    return datetime.datetime(*map(int, dateParts))
+    return datetime.datetime(*map(int, dateparts))
 
 
 def main():
     # Inspect the archive.py module to list the Classes based on Archive
-    dictArchive = dict()
+    dictarchive = dict()
     for name, obj in inspect.getmembers(da):
         if inspect.isclass(obj):
             if issubclass(obj, da.Archive) and name != 'Archive':
-                dictArchive[name] = obj
+                dictarchive[name] = obj
 
-    helparchive = 'Available options are [%s]' % ', '.join(dictArchive.keys())
+    helparchive = 'Available options are [%s]' % ', '.join(dictarchive.keys())
 
     # Check verbosity in the output
     msg = 'Read, manipulate and convert seismic waveforms generated by a DAS system.'
@@ -113,7 +113,7 @@ def main():
     parser.add_argument('--decimate', type=int, choices=[1, 5],
                         help='Factor by which the sampling rate is lowered by decimation.',
                         default=1)
-    parser.add_argument('-o', '--outstruct', type=str, choices=dictArchive.keys(),
+    parser.add_argument('-o', '--outstruct', type=str, choices=dictarchive.keys(),
                         help=helparchive, default='StreamBased')
     parser.add_argument('--metadata', action='store_true', default=False,
                         help='Read and display the metadata from the TDMS files')
@@ -143,7 +143,7 @@ def main():
 
     # Selected archive structure
     # Archive files in current directory
-    klass = dictArchive[args.outstruct]
+    klass = dictarchive[args.outstruct]
     archive = klass(root='.', experiment=args.filename, strictcheck=False)
 
     expectedtimes = dict()
@@ -161,7 +161,7 @@ def main():
                     # Save the previous Stream completely
                     if curstream is not None:
                         archive.archive(tr0)
-                        logs.info('Storing channel %s' % curstream)
+                        logs.info('Storing channel %s. Starttime: %s' % (curstream, data[1].get('starttime', None)))
 
                     # Update which stream is being processed
                     curstream = nslc(data[1])
@@ -174,7 +174,6 @@ def main():
                         tr0 = Trace(data=data[0], header=data[1])
                     else:
                         tr0 += Trace(data=data[0], header=data[1])
-                    # print(data[1], data[0])
 
                 # Update the datetime of the expected sample
                 expectedtimes[curstream] = data[1]['starttime'] + data[1]['npts']/data[1]['sampling_rate']
diff --git a/dasscripts/tdms.py b/dasscripts/tdms.py
index 19207b7b0b6bf368ceaa1bb14a45666b39a4f485..61322080a70276770b9a959766f1be4cadb81410 100644
--- a/dasscripts/tdms.py
+++ b/dasscripts/tdms.py
@@ -44,7 +44,7 @@ class TDMS(object):
         # convoluted during the decimation
         # for channel in range(self.__chstart, self.__chstop + 1, self.__chstep):
         for channel in self.__channels:
-            logging.debug('Create empty buffers')
+            logging.debug('Create empty buffer for channel %s' % channel)
             self.__buffer[channel] = None
 
         return self
@@ -67,9 +67,9 @@ class TDMS(object):
         :param channels: Selection of channels to work with (list of integers)
         :type channels: list
         :param starttime: Start of the selected time window
-        :type starttime: datetime.datetime
+        :type starttime: datetime.datetime or NoneType
         :param endtime: End of the selected time window
-        :type endtime: datetime.datetime
+        :type endtime: datetime.datetime or NoneType
         :param iterate: Select either Data (D) or Metadata (M)
         :type iterate: str
         :param decimate: Factor by which the sampling rate is lowered by decimation
@@ -339,8 +339,6 @@ class TDMS(object):
         self.__currentfile = None
         self.__search_data()
 
-        # print('reset', self.__twstart, self.starttime)
-
     def __readmetadata(self):
         # Metadata
         logs = logging.getLogger('Read Metadata')