remove scale_factor and add_offset

satpy/readers/viirs_l1b.py

@@ -237,8 +237,8 @@ def get_dataset(self, dataset_id, ds_info):
             data += factors[1]
 
         # update scale_factor and scale_offset
-        data.attrs["scale_factor"] = factors[0]
-        data.attrs["add_offset"] = factors[1]
+        data.attrs.pop("scale_factor", None)
+        data.attrs.pop("add_offset", None)
 
         # rename dimensions to correspond to satpy's 'y' and 'x' standard
         if "number_of_lines" in data.dims:

satpy/tests/reader_tests/test_viirs_l1b.py

@@ -339,7 +339,7 @@ def test_load_dnb_angles(self):
             assert v.attrs["sensor"] == "viirs"
 
     def test_scale_factor_and_offset_update(self):
-        """Test if scale_factor and add_offset are updated correctly."""
+        """Test if scale_factor and add_offset are removed correctly."""
         from satpy.readers import load_reader
         from satpy.tests.utils import make_dataid
         r = load_reader(self.reader_configs)
@@ -356,15 +356,8 @@ def test_scale_factor_and_offset_update(self):
                            make_dataid(name="I04", calibration="radiance"),
                            ])
         for v in datasets.values():
-            if v.attrs["units"] == "%":
-                assert int(v.attrs["scale_factor"]) == 110
-                assert int(v.attrs["add_offset"]) == 10
-            elif v.attrs["units"] == "K":
-                assert v.attrs["scale_factor"] == 1
-                assert v.attrs["add_offset"] == 0
-            elif v.attrs["calibration"] == "radiance" and v.attrs["units"] == "W m-2 um-1 sr-1":
-                assert v.attrs["scale_factor"] == 1.1
-                assert v.attrs["add_offset"] == 0.1
+            assert ('scale_factor' not in v.attrs)
+            assert ('add_offset' not in v.attrs)
 
 
 class TestVIIRSL1BReaderDayNight(TestVIIRSL1BReaderDay):