diff --git a/explorer/dxt.py b/explorer/dxt.py
index fca865b..e46cb9e 100644
--- a/explorer/dxt.py
+++ b/explorer/dxt.py
@@ -37,7 +37,6 @@
 
 from importlib import resources
 from explorer import version as dxt_version
-from packaging import version
 
 
 class Explorer:
@@ -268,6 +267,7 @@ def create_dataframe(
             "start",
             "end",
             "osts",
+            "pthread_id"
         ]
         total_logs = 0
         runtime = 0
@@ -1171,28 +1171,6 @@ def generate_index(self, file, report):
             "You can open the index.html file in your browser to interactively explore all plots"
         )
 
-    def check_log_version(self, file, log_version, library_version):
-        use_file = file
-        if version.parse(log_version) < version.parse(library_version):
-            use_file = file.replace(".darshan", ".converted.darshan")
-            self.logger.info(
-                'Converting .darshan log from {} to {}: format: saving output file "{}" in the current working directory.'.format(
-                    log_version, library_version, use_file
-                )
-            )
-
-            if not os.path.isfile(use_file):
-                ret = os.system("darshan-convert {} {}".format(file, use_file))
-
-                if ret != 0:
-                    self.logger.error(
-                        "Unable to convert .darshan file to version {}".format(
-                            library_version
-                        )
-                    )
-
-        return use_file
-
 
 def main():
     PARSER = argparse.ArgumentParser(description="DXT Explorer: ")
diff --git a/explorer/plots/operation.py b/explorer/plots/operation.py
index d53ed25..eadd475 100644
--- a/explorer/plots/operation.py
+++ b/explorer/plots/operation.py
@@ -19,7 +19,7 @@ def add_trace_to_graph(dataframe, color_scale=None, stragglers=False):
     if stragglers:
         custom_data = ["rank", "duration"]
     else:
-        custom_data = ["rank", "duration", "size", "offset", "osts"]
+        custom_data = ["rank", "duration", "size", "offset", "osts", "pthread_id"]
 
     fig.add_traces(
         list(
@@ -598,7 +598,7 @@ def append_content(target_tag, source_path, part="body"):
         error_x="duration",
         render_mode="auto",
         facet_row=facet_row,
-        custom_data=["rank", "duration", "size", "offset", "osts"],
+        custom_data=["rank", "duration", "size", "offset", "osts", "pthread_id"],
         color_discrete_sequence=["#d0e6f5", "#f7d8d5"],
         category_orders=category_orders,
     )
@@ -625,7 +625,7 @@ def append_content(target_tag, source_path, part="body"):
         render_mode="auto",
         facet_row=facet_row,
         color_discrete_sequence=["#3c93c2", "#f0746e"],
-        custom_data=["rank", "duration", "size", "offset", "osts"],
+        custom_data=["rank", "duration", "size", "offset", "osts", "pthread_id"],
         category_orders=category_orders,
     )
 
@@ -782,7 +782,8 @@ def append_content(target_tag, source_path, part="body"):
                 "Duration: %{customdata[1]}",
                 "Size: %{customdata[2]}",
                 "Offset: %{customdata[3]}",
-                "Osts: %{customdata[4]}",
+                "Lustre OSTs: %{customdata[4]}",
+                "Thread ID: %{customdata[5]}",
             ]
         )
     )
diff --git a/explorer/plots/spatiality.py b/explorer/plots/spatiality.py
index 9fc558d..f43d806 100644
--- a/explorer/plots/spatiality.py
+++ b/explorer/plots/spatiality.py
@@ -42,6 +42,9 @@
 if df.empty:
     quit()
 
+df["osts"] = df["osts"].astype(object).fillna("-")
+df["pthread_id"] = df["pthread_id"].astype(object).fillna("-")
+
 df["duration"] = df["end"] - df["start"]
 rank_gap = max(df["rank"]) * 0.075
 maximum_rank = max(df["rank"])
@@ -77,6 +80,9 @@ def paste0():
         label = label + "-"
     else:
         label = label + df["osts"].apply(str)
+
+    label += "<br>" + "Thread ID: " + df["pthread_id"].apply(str)
+
     return label
 
 
diff --git a/explorer/plots/transfer.py b/explorer/plots/transfer.py
index b582869..1ec28d3 100644
--- a/explorer/plots/transfer.py
+++ b/explorer/plots/transfer.py
@@ -69,6 +69,8 @@
 if df.empty:
     quit()
 
+df["osts"] = df["osts"].astype(object).fillna("-")
+
 df["duration"] = df["end"] - df["start"]
 
 duration = max(df["end"]) - min(df["start"])
@@ -125,6 +127,9 @@ def paste0():
         label = label + "-"
     else:
         label = label + df["osts"].apply(str)
+
+    label += "<br>" + "Thread ID: " + df["pthread_id"].apply(str)
+
     return label