fix: layers have cdf file and not json in metadata

Author: alastairtree

src/mag_toolkit/calibration/ScienceLayer.py

@@ -184,7 +184,9 @@ def _from_cdf(cls, path: Path, load_contents=False):
                     CONSTANTS.CSV_VARS.RANGE: data[:, 3],
                 }
             )
-
+        logger.debug(
+            f"Loaded contents from CDF at {path!s} with {len(contents) if contents is not None else 'no'} rows."
+        )
         science_layer = cls(
             id=dataset.attrs[CONSTANTS.CDF_ATTRS.LOGICAL_FILE_ID][0],
             mission=dataset.attrs[CONSTANTS.CDF_ATTRS.MISSION_GROUP][0],
@@ -193,7 +195,7 @@ def _from_cdf(cls, path: Path, load_contents=False):
             version=version,
             metadata=metadata,
             value_type=ValueType.VECTOR,
-            science_file=str(path),
+            science_file=path.name,
         )
         science_layer._set_content_date_from_filepath(path)
         science_layer._set_data_path(path)

tests/datastore/calibration/layers/2025/10/imap_mag_noop-layer_20251017_v001.json

@@ -6,7 +6,7 @@
         "data_filename": "imap_mag_noop-layer-data_20251017_v001.csv",
         "dependencies": [],
         "science": [
-            ".work/imap_mag_l1b_norm-mago_20251017_v002.json"
+            "imap_mag_l1b_norm-mago_20251017_v002.cdf"
         ]
     },
     "method": "noop",

tests/datastore/calibration/layers/2026/01/imap_mag_noop-norm-layer_20260116_v001.json

@@ -6,7 +6,7 @@
         "data_filename": "imap_mag_noop-norm-layer-data_20260116_v001.csv",
         "dependencies": [],
         "science": [
-            ".work/imap_mag_l1b_norm-mago_20260116_v002.json"
+            "imap_mag_l1b_norm-mago_20260116_v002.cdf"
         ]
     },
     "method": "noop",

tests/test_data/imap_mag_four-vector-offsets-norm-layer_20251017_v001.json

@@ -6,7 +6,7 @@
         "data_filename": "imap_mag_four-vector-offsets-norm-layer-data_20251017_v001.csv",
         "dependencies": [],
         "science": [
-            ".work/imap_mag_l1b_norm-mago_20251017_v002.json"
+            "imap_mag_l1b_norm-mago_20251017_v002.cdf"
         ]
     },
     "method": "noop",

tests/test_data/imap_mag_misaligned-timestamps-norm-layer_20251017_v001.json

@@ -6,7 +6,7 @@
         "data_filename": "imap_mag_misaligned-timestamps-norm-layer-data_20251017_v001.csv",
         "dependencies": [],
         "science": [
-            ".work/imap_mag_l1b_norm-mago_20251017_v002.json"
+            "imap_mag_l1b_norm-mago_20251017_v002.cdf"
         ]
     },
     "method": "noop",