{
 "id": "archive-access-probe-2026-09-23",
 "title": "Archive access probe: TESScut cutout, 2026-09-23",
 "type": "measurements",
 "summary": "The first end-to-end check of the MAST client and provenance ledger: one small TESS full-frame-image cutout retrieved, checksummed, ledgered and checked for completeness. A data-health check, not an astrophysical measurement.",
 "published": "2026-09-24",
 "updated": null,
 "license": "Apache-2.0",
 "research_status": "Data-access check · not a scientific result",
 "citation": null,
 "url": "/collections/archive-access-probe-2026-09-23/",
 "status": "published",
 "related": [
  {
   "title": "Tier-1 archive baseline pack, September 2026",
   "url": "/collections/tier1-baseline-pack-2026-09/",
   "type": "collection"
  },
  {
   "title": "Analysis stack: design and status",
   "url": "/documents/analysis-stack/",
   "type": "document"
  }
 ],
 "items": [
  {
   "id": "run-1",
   "kind": "ledger_run",
   "title": "Run #1: data_probe.mast_tesscut",
   "description": "Ledger run with its measurements and input-product references.",
   "origin": "derived",
   "access": "public",
   "access_note": null,
   "license": "Apache-2.0",
   "availability": "download",
   "size": null,
   "page_url": null,
   "files": [
    {
     "url": "/files/archive-access-probe-2026-09-23/run-1/run-1.json",
     "filename": "run-1.json",
     "bytes": 1172,
     "sha256": "ef28ec1d64bce2459a714cfe9c9eaaf04fab167615c43fcfc40dac11a10d1d80",
     "media": "application/json",
     "origin": "derived"
    }
   ]
  }
 ]
}