diff --git a/src/ctapipe/calib/camera/tests/test_extractors.py b/src/ctapipe/calib/camera/tests/test_extractors.py
index 40efd4f2fc3..a83c93fd1c0 100644
--- a/src/ctapipe/calib/camera/tests/test_extractors.py
+++ b/src/ctapipe/calib/camera/tests/test_extractors.py
@@ -2,24 +2,24 @@
 Tests for StatisticsExtractor and related functions
 """
 
-from astropy.table import QTable
 import numpy as np
 import pytest
+from astropy.table import QTable
+
 from ctapipe.calib.camera.extractor import PlainExtractor, SigmaClippingExtractor
 
+
 @pytest.fixture(name="test_plainextractor")
 def fixture_test_plainextractor(example_subarray):
     """test the PlainExtractor"""
-    return PlainExtractor(
-        subarray=example_subarray, chunk_size=2500
-    )
+    return PlainExtractor(subarray=example_subarray, chunk_size=2500)
+
 
 @pytest.fixture(name="test_sigmaclippingextractor")
 def fixture_test_sigmaclippingextractor(example_subarray):
     """test the SigmaClippingExtractor"""
-    return SigmaClippingExtractor(
-        subarray=example_subarray, chunk_size=2500
-    )
+    return SigmaClippingExtractor(subarray=example_subarray, chunk_size=2500)
+
 
 def test_extractors(test_plainextractor, test_sigmaclippingextractor):
     """test basic functionality of the StatisticsExtractors"""
@@ -36,17 +36,17 @@ def test_extractors(test_plainextractor, test_sigmaclippingextractor):
         dl1_table=flatfield_dl1_table
     )
 
-    assert np.any(np.abs(plain_stats_list[0].mean - 2.0) > 1.5) is False
-    assert np.any(np.abs(sigmaclipping_stats_list[0].mean - 77.0) > 1.5) is False
+    assert not np.any(np.abs(plain_stats_list[0].mean - 2.0) > 1.5)
+    assert not np.any(np.abs(sigmaclipping_stats_list[0].mean - 77.0) > 1.5)
 
-    assert np.any(np.abs(plain_stats_list[0].mean - 2.0) > 1.5) is False
-    assert np.any(np.abs(sigmaclipping_stats_list[0].mean - 77.0) > 1.5) is False
+    assert not np.any(np.abs(plain_stats_list[0].mean - 2.0) > 1.5)
+    assert not np.any(np.abs(sigmaclipping_stats_list[0].mean - 77.0) > 1.5)
 
-    assert np.any(np.abs(plain_stats_list[1].median - 2.0) > 1.5) is False
-    assert np.any(np.abs(sigmaclipping_stats_list[1].median - 77.0) > 1.5) is False
+    assert not np.any(np.abs(plain_stats_list[1].median - 2.0) > 1.5)
+    assert not np.any(np.abs(sigmaclipping_stats_list[1].median - 77.0) > 1.5)
 
-    assert np.any(np.abs(plain_stats_list[0].std - 5.0) > 1.5) is False
-    assert np.any(np.abs(sigmaclipping_stats_list[0].std - 10.0) > 1.5) is False
+    assert not np.any(np.abs(plain_stats_list[0].std - 5.0) > 1.5)
+    assert not np.any(np.abs(sigmaclipping_stats_list[0].std - 10.0) > 1.5)
 
 
 def test_check_outliers(test_sigmaclippingextractor):
@@ -63,11 +63,11 @@ def test_check_outliers(test_sigmaclippingextractor):
     )
 
     # check if outliers where detected correctly
-    assert sigmaclipping_stats_list[0].median_outliers[0][120] is True
-    assert sigmaclipping_stats_list[0].median_outliers[1][67] is True
-    assert sigmaclipping_stats_list[1].median_outliers[0][120] is True
-    assert sigmaclipping_stats_list[1].median_outliers[1][67] is True
-    
+    assert sigmaclipping_stats_list[0].median_outliers[0][120]
+    assert sigmaclipping_stats_list[0].median_outliers[1][67]
+    assert sigmaclipping_stats_list[1].median_outliers[0][120]
+    assert sigmaclipping_stats_list[1].median_outliers[1][67]
+
 
 def test_check_chunk_shift(test_sigmaclippingextractor):
     """test the chunk shift option and the boundary case for the last chunk"""
@@ -77,10 +77,8 @@ def test_check_chunk_shift(test_sigmaclippingextractor):
     # insert outliers
     flatfield_dl1_table = QTable([times, flatfield_dl1_data], names=("time", "image"))
     sigmaclipping_stats_list = test_sigmaclippingextractor(
-        dl1_table=flatfield_dl1_table,
-        chunk_shift=2000
+        dl1_table=flatfield_dl1_table, chunk_shift=2000
     )
 
     # check if three chunks are used for the extraction
     assert len(sigmaclipping_stats_list) == 3
-