diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 62c0d80..c7ba232 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -9,7 +9,7 @@ repos:
     rev: 5.13.2
     hooks:
       - id: isort
-        exclude: ".*(.fits|.fts|.fit|.header|.txt|tca.*|extern.*|)$"
+        exclude: ".*(.fits|.fts|.fit|.header|.txt|tca.*|extern.*)$"
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.5.0
     hooks:
diff --git a/examples/imaging_demo.py b/examples/imaging_demo.py
index 04b0fed..444439c 100644
--- a/examples/imaging_demo.py
+++ b/examples/imaging_demo.py
@@ -12,27 +12,30 @@
 """
 
 import logging
+
 import astropy.units as u
 import matplotlib.pyplot as plt
 import numpy as np
-# from astropy.coordinates import SkyCoord
-# from astropy.time import Time
-# from sunpy.map import make_fitswcs_header, Map
+from xrayvision.clean import vis_clean
+from xrayvision.imaging import vis_to_image, vis_to_map
+from xrayvision.mem import mem
+from xrayvision.visibility import Visibility
 
-# from stixpy.frames import get_hpc_info
-from stixpy.imaging.em import em
 from stixpy.calibration.visibility import (
     calibrate_visibility,
     create_meta_pixels,
     create_visibility,
     get_uv_points_data,
 )
+# from stixpy.frames import get_hpc_info
+from stixpy.imaging.em import em
 from stixpy.product import Product
 
-from xrayvision.clean import vis_clean
-from xrayvision.imaging import vis_to_image, vis_to_map
-from xrayvision.mem import mem
-from xrayvision.visibility import Visibility
+# from astropy.coordinates import SkyCoord
+# from astropy.time import Time
+# from sunpy.map import make_fitswcs_header, Map
+
+
 
 logger = logging.getLogger(__name__)
 logger.setLevel("DEBUG")
diff --git a/stixpy/calibration/tests/test_visibility.py b/stixpy/calibration/tests/test_visibility.py
index 4e0d57f..e0b8d11 100644
--- a/stixpy/calibration/tests/test_visibility.py
+++ b/stixpy/calibration/tests/test_visibility.py
@@ -1,6 +1,11 @@
+import astropy.units as u
+
 from stixpy.calibration.visibility import get_uv_points_data
 
 
 def test_get_uv_points_data():
     uv_data = get_uv_points_data()
-    assert True
+    assert uv_data['u'][0]     == -0.03333102271709666 / u.arcsec
+    assert uv_data['v'][0]     == 0.005908224739704219 / u.arcsec
+    assert uv_data['isc'][0]   == 1
+    assert uv_data['label'][0] == '3c'
diff --git a/stixpy/calibration/visibility.py b/stixpy/calibration/visibility.py
index ec9654b..745b78c 100644
--- a/stixpy/calibration/visibility.py
+++ b/stixpy/calibration/visibility.py
@@ -271,10 +271,10 @@ def get_uv_points_data(d_det=47.78 * u.mm, d_sep=545.30 * u.mm):
     ----------
     d_det: astropy Quantity
         Distance between the rear grid and the detector plane (in mm). Default, 47.78 * u.mm
-    
+
     d_sep: astropy Quantity
         Distance between the front and the rear grid (in mm). Default, 545.30 * u.mm
-        
+
     Returns
     -------
     A dictionary containing sub-collimator indices, sub-collimator labels and coordinates of the STIX (u,v) points (defined in arcsec^-1)
@@ -285,7 +285,7 @@ def get_uv_points_data(d_det=47.78 * u.mm, d_sep=545.30 * u.mm):
         https://doi.org/10.1007/s11207-023-02205-7
 
     """
-    
+
     subc = read_subc_params()
     imaging_ind = np.where((subc["Grid Label"] != "cfl") & (subc["Grid Label"] != "bkg"))
 
@@ -323,7 +323,7 @@ def get_uv_points_data(d_det=47.78 * u.mm, d_sep=545.30 * u.mm):
     }
 
     return uv_data
-    
+
 
 def calibrate_visibility(vis, flare_location=(0, 0) * u.arcsec):
     """
@@ -386,7 +386,7 @@ def calibrate_visibility(vis, flare_location=(0, 0) * u.arcsec):
     )
 
     return cal_vis
-    
+
 
 def sas_map_center():
     # receter map at 0,0 taking account of mean or actual sas sol
diff --git a/stixpy/tests/test_science.py b/stixpy/tests/test_science.py
index 916340e..cf7a95b 100644
--- a/stixpy/tests/test_science.py
+++ b/stixpy/tests/test_science.py
@@ -4,12 +4,7 @@
 from numpy.testing import assert_allclose
 
 from stixpy.product import Product
-from stixpy.product.sources.science import (
-    CompressedPixelData,
-    RawPixelData,
-    Spectrogram,
-    SummedCompressedPixelData,
-)
+from stixpy.product.sources.science import CompressedPixelData, RawPixelData, Spectrogram, SummedCompressedPixelData
 
 
 @pytest.mark.remote_data