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      "orekit_jpype not importable (ModuleNotFoundError: No module named 'orekit_jpype'); pip install 'satnogs-optical-network[od]'",
      "no JVM (JAVA_HOME unset and no 'java' on PATH)",
      "orekit-data not found (set OREKIT_DATA_PATH to the orekit-data zip or directory, or put orekit-data.zip in the working directory)"
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          66482,
          66483,
          66484,
          66485,
          66486,
          66487
        ],
        "station_id": 14,
        "track_id": 66477
      },
      {
        "epoch": "2026-09-08T03:17:44.212358",
        "excluded_measurements": 4,
        "kind": "contradictory",
        "measurements": [
          "062c0f9c-4423-5f11-83a5-69c2342584c2",
          "1e3d9485-9b5f-57a4-9964-122275e6838d",
          "4c61885e-52d2-54c1-8060-42f59504332e",
          "939bfa95-707c-5736-bce8-e69ae50012ca"
        ],
        "object_norad_id": 61510,
        "positions": [
          "325.522709 70.907960",
          "325.771984 70.729853",
          "325.971969 70.583603",
          "326.853844 69.912393"
        ],
        "published_observations": 0,
        "scope": "sibling-tracks",
        "sibling_track_ids": [
          66488,
          66489,
          66490,
          66491
        ],
        "station_id": 14,
        "track_id": 66488
      },
      {
        "epoch": "2026-09-08T03:26:00.111113",
        "excluded_measurements": 2,
        "kind": "contradictory",
        "measurements": [
          "62b06836-9413-56f2-bb43-d93d7cf3ece1",
          "69958c7e-622d-551d-a5a5-23adb3f24770"
        ],
        "object_norad_id": 69577,
        "positions": [
          "332.101457 71.563758",
          "332.228330 71.643406"
        ],
        "published_observations": 0,
        "scope": "sibling-tracks",
        "sibling_track_ids": [
          66492,
          66493
        ],
        "station_id": 14,
        "track_id": 66492
      }
    ],
    "detail_omitted": 0,
    "epochs": 44,
    "measurements_excluded": 196,
    "note": "one epoch stated twice costs its own measurements, never the session: a repeated epoch is published once, a contradicted one is published not at all, and every excluded row is still in the parquet archive. Counted over tracks with a correlated object, which are the only tracks a TDM is written for. See docs/decisions/0004-duplicate-epochs.md",
    "tracks": 39,
    "tracks_left_without_observations": 160
  },
  "generated_at": "2026-09-22T23:11:21.370008Z",
  "generation_id": "f40e2bb2a8f77ede19fa4fb74457af7e1f80dc86e00e7391f92ec81c48a51b77",
  "generator": "satnogs_optical_network.products",
  "iod": {
    "11": {
      "identified_lines": 2517,
      "identified_tracks": 28,
      "lines": 3735,
      "skipped": 0,
      "skipped_reasons": [],
      "unk_lines": 1218,
      "unk_tracks": 11,
      "wide_id_tracks": 0
    },
    "14": {
      "identified_lines": 1540,
      "identified_tracks": 209,
      "lines": 2097,
      "skipped": 0,
      "skipped_reasons": [],
      "unk_lines": 557,
      "unk_tracks": 165,
      "wide_id_tracks": 0
    }
  },
  "layout": {
    "generation_dir": "session_date=2026-09-07/generations/f40e2bb2a8f77ede19fa4fb74457af7e1f80dc86e00e7391f92ec81c48a51b77",
    "measurements": "measurements.parquet",
    "note": "Resolve products through this manifest. Retained generations must not be combined with a recursive Parquet wildcard.",
    "session_dir": "session_date=2026-09-07",
    "stations": "stations",
    "tracks": "tracks.parquet"
  },
  "metrics": {
    "measurements": 5852,
    "objects": 56,
    "stations": 2,
    "tracks": 423,
    "unk_tracks": 336
  },
  "metrics_basis": "as-ingested",
  "packaging": {
    "note": "TDM file count is a packaging artifact, not a headline metric: it both overstates the claim to experts and understates the data volume (ADR 0010). tdm_observations is the count actually read back out of the published station-night TDMs and checked against the measurement rows; it is the number to compare a published file against. tdm_tracks is the number of segments across them.",
    "tdm_files": 2,
    "tdm_observations": 3861,
    "tdm_observations_expected": 3861,
    "tdm_observations_verified": true,
    "tdm_tracks": 77
  },
  "per_station": [
    {
      "epoch_collisions": 1,
      "iod": {
        "identified_lines": 2517,
        "identified_tracks": 28,
        "lines": 3735,
        "skipped": 0,
        "skipped_reasons": [],
        "unk_lines": 1218,
        "unk_tracks": 11,
        "wide_id_tracks": 0
      },
      "iod_station_code": "11",
      "measurements": 3737,
      "name": "dwingeloo",
      "objects": 21,
      "station_id": 11,
      "tdm_tracks": 28,
      "tracks": 40,
      "unk_tracks": 17
    },
    {
      "epoch_collisions": 43,
      "iod": {
        "identified_lines": 1540,
        "identified_tracks": 209,
        "lines": 2097,
        "skipped": 0,
        "skipped_reasons": [],
        "unk_lines": 557,
        "unk_tracks": 165,
        "wide_id_tracks": 0
      },
      "iod_station_code": "14",
      "measurements": 2115,
      "name": "optical-sky-rpihq",
      "objects": 36,
      "station_id": 14,
      "tdm_tracks": 209,
      "tracks": 383,
      "unk_tracks": 319
    }
  ],
  "products": [
    {
      "bytes": 9569,
      "conformance": null,
      "kind": "characterisation-station",
      "path": "session_date=2026-09-07/generations/f40e2bb2a8f77ede19fa4fb74457af7e1f80dc86e00e7391f92ec81c48a51b77/stations/station-11.json",
      "scope": "station-night",
      "scope_key": "11-2026-09-07",
      "sha256": "5fff54858ca6a2edd8d801ef27020479f2248498ca255df44a52efc82a5f5503"
    },
    {
      "bytes": 6380,
      "conformance": null,
      "kind": "characterisation-station",
      "path": "session_date=2026-09-07/generations/f40e2bb2a8f77ede19fa4fb74457af7e1f80dc86e00e7391f92ec81c48a51b77/stations/station-14.json",
      "scope": "station-night",
      "scope_key": "14-2026-09-07",
      "sha256": "9811780128e360329831ab64943ec16ce1a638171f66f1217dd9facb960be002"
    },
    {
      "bytes": 250245,
      "conformance": null,
      "kind": "iod-station-night",
      "path": "session_date=2026-09-07/generations/f40e2bb2a8f77ede19fa4fb74457af7e1f80dc86e00e7391f92ec81c48a51b77/iod/station-11-2026-09-07.iod",
      "scope": "station-night",
      "scope_key": "11-2026-09-07",
      "sha256": "2152a6add5b6e0a9daa23e62ed01bd94f310ffe1a84a866674b36b06655a9320"
    },
    {
      "bytes": 140499,
      "conformance": null,
      "kind": "iod-station-night",
      "path": "session_date=2026-09-07/generations/f40e2bb2a8f77ede19fa4fb74457af7e1f80dc86e00e7391f92ec81c48a51b77/iod/station-14-2026-09-07.iod",
      "scope": "station-night",
      "scope_key": "14-2026-09-07",
      "sha256": "f5d725e62a7a52bc200de91d94075b5b7d875cab1c55eeed2b18a9a1f045a302"
    },
    {
      "bytes": 655094,
      "conformance": null,
      "kind": "parquet-session",
      "path": "session_date=2026-09-07/generations/f40e2bb2a8f77ede19fa4fb74457af7e1f80dc86e00e7391f92ec81c48a51b77/measurements.parquet",
      "scope": "session",
      "scope_key": "2026-09-07",
      "sha256": "2dee98e09fa6e8dbe62c888aa8897cc1e5dabc3a2b2f20e88cf456e40e53fbc0"
    },
    {
      "bytes": 35213,
      "conformance": null,
      "kind": "parquet-tracks",
      "path": "session_date=2026-09-07/generations/f40e2bb2a8f77ede19fa4fb74457af7e1f80dc86e00e7391f92ec81c48a51b77/tracks.parquet",
      "scope": "session",
      "scope_key": "2026-09-07",
      "sha256": "3297dbcb5b7b7a1f84fa43e430d3fdcc9ee707c6c578d1a95cec8ab8ca6ad658"
    },
    {
      "bytes": 303223,
      "conformance": "SKIPPED: Orekit conformance NOT VERIFIED for station-11-2026-09-07.tdm: orekit_jpype not importable (ModuleNotFoundError: No module named 'orekit_jpype'); pip install 'satnogs-optical-network[od]'; no JVM (JAVA_HOME unset and no 'java' on PATH); orekit-data not found (set OREKIT_DATA_PATH to the orekit-data zip or directory, or put orekit-data.zip in the working directory). Offline structural check: clean.",
      "kind": "tdm-station-night",
      "observations": 2515,
      "path": "session_date=2026-09-07/generations/f40e2bb2a8f77ede19fa4fb74457af7e1f80dc86e00e7391f92ec81c48a51b77/tdm/station-11-2026-09-07.tdm",
      "scope": "station-night",
      "scope_key": "11-2026-09-07",
      "sha256": "4c7573a03260699c601b21e01e471a9a8ef8f2b9dccd8bb2af02d59aacf7e19d"
    },
    {
      "bytes": 205452,
      "conformance": "SKIPPED: Orekit conformance NOT VERIFIED for station-14-2026-09-07.tdm: orekit_jpype not importable (ModuleNotFoundError: No module named 'orekit_jpype'); pip install 'satnogs-optical-network[od]'; no JVM (JAVA_HOME unset and no 'java' on PATH); orekit-data not found (set OREKIT_DATA_PATH to the orekit-data zip or directory, or put orekit-data.zip in the working directory). Offline structural check: clean.",
      "kind": "tdm-station-night",
      "observations": 1346,
      "path": "session_date=2026-09-07/generations/f40e2bb2a8f77ede19fa4fb74457af7e1f80dc86e00e7391f92ec81c48a51b77/tdm/station-14-2026-09-07.tdm",
      "scope": "station-night",
      "scope_key": "14-2026-09-07",
      "sha256": "6225bab845eb0e533ea5347a1f6582457d12a532ca38127ed1ce759aa55a2dfb"
    }
  ],
  "quarantined_excluded": 0,
  "station": [
    11,
    14
  ],
  "stations": [
    11,
    14
  ],
  "tdm_excluded_epoch_collisions": 196,
  "tdm_skipped_no_observations": 160,
  "tdm_skipped_unk": 186
}