diff --git a/httomo/cli.py b/httomo/cli.py
index 9817763fa..47a4f8ac5 100644
--- a/httomo/cli.py
+++ b/httomo/cli.py
@@ -265,7 +265,7 @@ def run(
     method_wrapper_comm = global_comm if not does_contain_sweep else MPI.COMM_SELF
 
     if global_comm.rank == 0:
-        initialise_output_directory(pipeline, does_contain_sweep)
+        initialise_output_dir_copy_files_inject_defaults(pipeline, does_contain_sweep)
 
     global_comm.Barrier()
 
@@ -380,9 +380,15 @@ def set_global_constants(
     httomo.globals.MAX_CPU_SLICES = max_cpu_slices
 
 
-def initialise_output_directory(
+def initialise_output_dir_copy_files_inject_defaults(
     pipeline: Union[Path, str], does_contain_sweep: bool
 ) -> None:
+    """This function does the following:
+    - creates output folder
+    - copies the distortion coefficient file (if provided)
+    - injects omitted default parameters into the pipeline file
+    - copies the YAML or JSON pipeline file
+    """
     try:
         Path.mkdir(httomo.globals.run_out_dir, parents=True, exist_ok=True)
     except PermissionError as e:
diff --git a/httomo/cli_utils.py b/httomo/cli_utils.py
index 1e10d0593..bd7066ff7 100644
--- a/httomo/cli_utils.py
+++ b/httomo/cli_utils.py
@@ -1,9 +1,7 @@
 import json
 from pathlib import Path
-from typing import Union, Dict, List, Any
-
-MANUAL_SWEEP_TAG = "!Sweep"
-RANGE_SWEEP_TAG = "!SweepRange"
+from typing import Union, Dict, Any
+from httomo.ui_layer import yaml_loader
 
 
 def is_sweep_pipeline(pipeline: Union[Path, str]) -> bool:
@@ -34,9 +32,12 @@ def is_sweep_pipeline(pipeline: Union[Path, str]) -> bool:
     if isinstance(pipeline, (Path, str)) and (
         isinstance(pipeline, Path) or Path(pipeline).exists()
     ):
-        with open(pipeline) as f:
-            for line in f:
-                if MANUAL_SWEEP_TAG in line or RANGE_SWEEP_TAG in line:
+        pipeline_conf = yaml_loader(pipeline)
+        for method in pipeline_conf:
+            for value in method["parameters"].values():
+                if isinstance(
+                    value, tuple
+                ):  # checking if sweep tags were parsed into tuples
                     return True
         return False
 
diff --git a/tests/test_cli.py b/tests/test_cli.py
index cd236acb6..3dd745ace 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -3,7 +3,6 @@
 import tempfile
 
 import pytest
-from pytest_mock import MockerFixture
 from click.testing import CliRunner
 
 import httomo
@@ -12,7 +11,7 @@
     set_global_constants,
     transform_limit_str_to_bytes,
     main,
-    initialise_output_directory,
+    initialise_output_dir_copy_files_inject_defaults,
 )
 from httomo.ui_layer import PipelineFormat
 
@@ -121,7 +120,7 @@ def test_cli_run_accepts_json_string_with_format_flag(mocker, pipeline_format: s
             mock_transform_layer.return_value = mock_transform_instance
             mock_transform_instance.transform.return_value = mock_pipeline
 
-            mocker.patch("httomo.cli.initialise_output_directory")
+            mocker.patch("httomo.cli.initialise_output_dir_copy_files_inject_defaults")
             mocker.patch("httomo.cli.execute_high_throughput_run")
             mocker.patch("httomo.cli.is_sweep_pipeline", return_value=False)
             mocker.patch("httomo.cli.make_monitors", return_value=None)
@@ -172,7 +171,6 @@ def test_cli_run_accepts_json_string_with_format_flag(mocker, pipeline_format: s
 
 def test_initialise_output_directory_handles_json_string(tmp_path):
     """Test that initialise_output_directory correctly handles JSON string input."""
-    from httomo.cli import initialise_output_directory
 
     # Set up the global output directory
     output_dir = tmp_path / "output"
@@ -181,7 +179,7 @@ def test_initialise_output_directory_handles_json_string(tmp_path):
     json_string = json.dumps(SAMPLE_JSON_PIPELINE)
 
     # Call the function with a JSON string
-    initialise_output_directory(json_string, False)
+    initialise_output_dir_copy_files_inject_defaults(json_string, False)
 
     # Verify directory was created
     assert output_dir.exists()
@@ -206,7 +204,7 @@ def test_initialise_output_directory_handles_path_input(
     pipeline_path = Path(__file__).parent.parent / standard_loader
 
     # Call the function with a Path
-    initialise_output_directory(pipeline_path, False)
+    initialise_output_dir_copy_files_inject_defaults(pipeline_path, False)
 
     # Verify directory was created
     assert output_dir.exists()
@@ -219,7 +217,7 @@ def test_output_dir_created_if_doesnt_exist(tmp_path: Path, standard_loader: str
     output_dir_cli_arg = tmp_path / "out"
     httomo.globals.run_out_dir = output_dir_cli_arg / "httomo-output-dir"
     pipeline_path = Path(__file__).parent.parent / standard_loader
-    initialise_output_directory(pipeline_path, False)
+    initialise_output_dir_copy_files_inject_defaults(pipeline_path, False)
     assert output_dir_cli_arg.exists()
     assert httomo.globals.run_out_dir.exists()