S1 preprocessing failed for Spaceeye_Preprocess workflow - "Value for \'Source Band\' is invalid: \'Intensity_VH"

[DavisZhangUIUC]

Hi Farmvibes-AI, I get the following error when running spaceeye_preprocess workflow. It fails at the beginning of the s1_preprocessing task.

# Geometry
geom = shpg.Point(30.636398038717186, 8.973720591029792).buffer(.1, cap_style=3)
# Time range
time_range = (datetime(2014, 1, 1), datetime(2016, 1, 1))

s1_run = client.run("data_ingestion/spaceeye/spaceeye_preprocess", "Africa 2014-2016", geometry=geom, time_range=time_range)

'RuntimeError: Failed to run op apply_sentinel1_snap_processing in workflow run id ce3c8468-b513-40c3-a846-68c71d91dabb for input with message id 00-ce3c8468b51340c3a84668c71d91dabb-ebdf1b0b9b324142-01. Error description: <class \'RuntimeError\'>: Traceback (most recent call last):
  File "/opt/conda/lib/python3.8/site-packages/vibe_agent/worker.py", line 134, in run_op
    return factory.build(spec).run(input, cache_info)
  File "/opt/conda/lib/python3.8/site-packages/vibe_agent/ops.py", line 106, in run
    stac_results = self._call_validate_op(**items)
  File "/opt/conda/lib/python3.8/site-packages/vibe_agent/ops.py", line 72, in _call_validate_op
    results = self.callback(**kwargs)
  File "/app/ops/apply_sentinel1_snap_processing/apply_sentinel1_snap_processing.py", line 176, in preprocess_items
    preprocessed_product = preprocess_item(sentinel1_product, self.tmp_dir.name)
  File "/app/ops/apply_sentinel1_snap_processing/apply_sentinel1_snap_processing.py", line 149, in preprocess_item
    p4 = do_calibration(p3, polarization="DV", pols="VH,VV")
  File "/app/ops/apply_sentinel1_snap_processing/apply_sentinel1_snap_processing.py", line 86, in do_calibration
    output = GPF.createProduct("Calibration", parameters, source)
RuntimeError: org.esa.snap.core.gpf.OperatorException: Operator \'CalibrationOp\': Value for \'Source Band\' is invalid: \'Intensity_VH\'

[rafaspadilha]

Hi, @DavisZhangUIUC. Thank you for raising this issue.

From the error that you shared, it seems like the Intensity_VH band from one of the downloaded Sentinel-1 products is not available or is somewhat incomplete. This seems related to issue #116 and #125, in which ops would fail when accessing missing bands. We are investigating possible solutions for this.

In the meantime, an alternative would be to identify which tile/product has the problematic issue and split your time range to ignore that product.

Please, could you share the input geometry and time range used? I will try to reproduce the problem locally and investigate it.