diff --git a/python/catalog/find_catalog_column.py b/python/catalog/find_catalog_column.py
index 0f5fb66..a1dcd40 100644
--- a/python/catalog/find_catalog_column.py
+++ b/python/catalog/find_catalog_column.py
@@ -20,8 +20,8 @@ def find_catalog_column(catalog, field_name):
     Finds the index of a column in the catalog based on its field name.
 
     Parameters:
-        catalog (np.ndarray): A structured NumPy array representing the catalog.
-                              https://docs.cyfronet.pl/display/ISDOC/Seismic+catalog
+        catalog (np.ndarray): A structured NumPy array representing a catalog in EPISODES Platform format:
+                              https://docs.cyfronet.pl/display/ISDOC/Catalogs
         field_name (str): The field name of the entry to search for.
 
     Returns:
diff --git a/python/catalog/sort_by_time.py b/python/catalog/sort_by_time.py
index 5874d0e..0af065c 100644
--- a/python/catalog/sort_by_time.py
+++ b/python/catalog/sort_by_time.py
@@ -23,7 +23,7 @@ def sort_by_time(catalog):
     Sorts the given catalog based on the 'Time' column.
 
     Parameters:
-        catalog (np.ndarray): A structured NumPy array representing the catalog.
+        catalog (np.ndarray): A structured NumPy array representing a seismic catalog in EPISODES Platform format:
                               https://docs.cyfronet.pl/display/ISDOC/Seismic+catalog
 
     Returns:
diff --git a/python/catalog/sort_by_time_standalone.py b/python/catalog/sort_by_time_standalone.py
index e51e747..25508a6 100644
--- a/python/catalog/sort_by_time_standalone.py
+++ b/python/catalog/sort_by_time_standalone.py
@@ -22,7 +22,7 @@ def sort_by_time(catalog):
     Sorts the given catalog based on the 'Time' column.
 
     Parameters:
-        catalog (np.ndarray): A structured NumPy array representing the catalog.
+        catalog (np.ndarray): A structured NumPy array representing a seismic catalog in EPISODES Platform format:
                               https://docs.cyfronet.pl/display/ISDOC/Seismic+catalog
 
     Returns: