diff --git a/imap_processing/glows/l2/glows_l2_data.py b/imap_processing/glows/l2/glows_l2_data.py
index c9fb7cf6d..22c63950e 100644
--- a/imap_processing/glows/l2/glows_l2_data.py
+++ b/imap_processing/glows/l2/glows_l2_data.py
@@ -106,8 +106,11 @@ def __post_init__(self, l1b_data: xr.Dataset, position_angle: float) -> None:
         self.photon_flux = np.zeros(self.number_of_bins)
         self.flux_uncertainties = np.zeros(self.number_of_bins)
 
-        # TODO: Only where exposure counts != 0
-        if len(self.exposure_times) != 0:
+        if (
+            len(self.exposure_times) != 0
+            and self.exposure_times[0] > 0
+            and len(np.unique(self.exposure_times)) == 1
+        ):
             self.photon_flux = self.raw_histograms / self.exposure_times
             self.flux_uncertainties = raw_uncertainties / self.exposure_times
 
diff --git a/imap_processing/tests/glows/test_glows_l2_data.py b/imap_processing/tests/glows/test_glows_l2_data.py
index d343fd630..5ffe6f2fa 100644
--- a/imap_processing/tests/glows/test_glows_l2_data.py
+++ b/imap_processing/tests/glows/test_glows_l2_data.py
@@ -175,6 +175,29 @@ def test_zero_exposure_bins(l1b_dataset, mock_ecliptic_bin_centers):
     assert np.allclose(lc.exposure_times, expected_exposure)
 
 
+def test_zero_exposure_values(l1b_dataset, mock_ecliptic_bin_centers):
+    """Zero exposure yields zero flux and zero uncertainty per bin."""
+
+    # Note: all bins have the same exposure time, so if one is zero all are zero.
+
+    # Update values used to calculate exposure times to
+    # ensure a zero exposure result.
+    l1b_dataset["spin_period_average"].data[:] = 0
+    l1b_dataset["number_of_spins_per_block"].data[:] = 0
+
+    with np.errstate(divide="raise", invalid="raise"):
+        lc = DailyLightcurve(l1b_dataset, position_angle=0.0)
+
+    expected = np.zeros(l1b_dataset.sizes["bins"], dtype=float)
+    assert lc.exposure_times.shape == expected.shape
+    assert len(np.unique(lc.exposure_times)) == 1
+    assert np.array_equal(lc.exposure_times, expected)
+    assert np.array_equal(lc.photon_flux, expected)
+    assert np.array_equal(lc.flux_uncertainties, expected)
+    assert np.all(np.isfinite(lc.photon_flux))
+    assert np.all(np.isfinite(lc.flux_uncertainties))
+
+
 def test_number_of_bins(l1b_dataset, mock_ecliptic_bin_centers):
     lc = DailyLightcurve(l1b_dataset, position_angle=0.0)
     assert lc.number_of_bins == 4