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    "sha256": "54a4f2a1c0068f9efa2d00d7bf7c6488beb2a308271ad714173f39c89c378a22",
    "scope": "The author publicly contributed these FITS files as GPI public-release data. Public availability and the repository code license are evidence of provenance, not by themselves an explicit observation-pixel redistribution grant."
  },
  "preserved_limits": [
    "Only three of the original nineteen J-band exposures; no complete publication reproduction",
    "Original source byte sizes and Git blob SHA1 are pinned; full-file SHA256 has not been computed because only exact ranged blocks were downloaded",
    "Every downloaded SCI/DQ block and each preserved header has its own SHA256; the selected NPZ has exact SHA256",
    "No ERR variance extension; processed-cube covariance is estimated conditionally rather than inventing independent Poisson ADU errors",
    "Per-spot location strings and mean center in 0099/0111 are repeated; independently remeasure spot centroids before precision claims",
    "Use CD matrix and AVPARANG, not stale CDELT1/2 or PAR_ANG; FITS CRPIX is one-based while pyKLIP PSFCENT/SATS use native zero-based positions"
  ],
  "adopted_throughput_lookup": {
    "repository_commit": "ef4f6ab9eac6d5b13e0cc5c4950826396320f566",
    "path": "pyklip/instruments/GPI_profiles/gpi_offaxis_throughput_J.fits",
    "bytes": 8640,
    "sha256": "b6f9aaabdaf23c068bf7315a93d7e274e424c6e24e113abfb5d90e863bd17119",
    "radius_unit": "arcseconds as documented in matching GPI.py, absent from FITS table",
    "domain_arcseconds": [
      0,
      0.483
    ],
    "linear_interpolation_at_0_4267_arcseconds": 0.9991435705047214,
    "status": "Research-only lookup, not applied in the final empirical contrast extraction. Original measurement provenance and uncertainty remain unestablished.",
    "redistribution_and_origin": "Unresolved calibration-data provenance/permission; retained for internal source audit, not assumed publishable from code license.",
    "used_in_tutorial": false
  },
  "observed_pixel_redistribution": {
    "status": "UNRESOLVED; no website publication or redistribution approval inferred",
    "known": "Jason Wang explicitly contributed these original public-release files; current data release URL returns403",
    "not_established": "An explicit original Gemini scientific-pixel redistribution licence or author/institution grant covering this repackaged subset",
    "required_before_public_release": "Resolve a data-specific grant before publishing observed image pixels. Current approved public scope contains own scripts/synthetic pixels, original headers and numerical facts, with end-user upstream downloading for observed pixels.",
    "research_package": "docs/astronomy/ac22/research-data/gpi-three-exposures-ten-channels.npz"
  },
  "official_upstream_repository": "semaphoreP/pyklip",
  "official_upstream_evidence": "Official current README states move from Bitbucket and development led by Jason Wang. The pinned original 2016 data commit is available directly in this author repository; header range matched exact SHA256.",
  "official_upstream_url": "https://raw.githubusercontent.com/semaphoreP/pyklip/72a7517b1a34bdc29c33211f2ef591ddff64dcf9/tests/data/",
  "initial_inspection_mirror": {
    "repository": "mileslucas/pyklip",
    "commit": "ef4f6ab9eac6d5b13e0cc5c4950826396320f566"
  }
}