{
  "status": "Catalog inventory and coverage only; no velocity-field or attractor fit",
  "snapshot_date": "2026-10-31",
  "desi_selected_spectra": 14140375,
  "desi_occupied_bins": 39364,
  "cf4_records": 55877,
  "cf4_unique_pgc": 55877,
  "cf4_method_counts": {
    "SN Ia": 1004,
    "Tully-Fisher": 12222,
    "Fundamental Plane": 42223,
    "SBF": 469,
    "SN II": 94,
    "TRGB": 446,
    "Cepheid": 69,
    "Masers": 6
  },
  "norma_cone": {
    "centre_galactic_deg": [
      325,
      -7
    ],
    "radius_deg": 20,
    "all_distances_records": 389,
    "distance_40_100_mpc_records": 126,
    "note": "Exploratory direction and cuts, not an inferred attractor boundary; distances are transforms of combined catalog moduli."
  },
  "inputs": [
    {
      "id": "cf4",
      "cache_path": "data/catalogs/cf4-table2.txt",
      "url": "https://content.cld.iop.org/journals/0004-637X/944/1/94/revision1/apjac94d8t2_mrt.txt",
      "sha256": "a42eba650c70ccb9e2624c4d8287ca54a637ce018870eb289f648325b20191ed",
      "bytes": 10731977
    },
    {
      "id": "desi_bins",
      "cache_path": "data/catalogs/desi-test.csv",
      "url": "https://datalab.noirlab.edu/tap/sync",
      "sha256": "3088524d1d169f803a466da13d773e11b7c34e03d964e07d5f7ef7a68701d30f",
      "bytes": 470074,
      "query": "SELECT FLOOR(glon/5) AS lon_bin, FLOOR((glat+90)/5) AS lat_bin, FLOOR(z/0.05) AS z_bin, COUNT(*) AS n FROM desi_dr1.zpix WHERE zcat_primary='true' AND spectype='GALAXY' AND zwarn=0 AND z>0 AND z<2 AND glon>=0 AND glon<360 AND glat>=-90 AND glat<90 GROUP BY 1,2,3",
      "maxrec": 200000
    },
    {
      "id": "desi_count",
      "cache_path": "data/catalogs/desi-count.csv",
      "url": "https://datalab.noirlab.edu/tap/sync",
      "sha256": "dea382b4ba4978179913074167b20d1c641b9ecdb4f44a3f7d7bd79d2cdab9e0",
      "bytes": 63,
      "query": "SELECT COUNT(*) AS n, MIN(z) AS z_min, MAX(z) AS z_max FROM desi_dr1.zpix WHERE zcat_primary='true' AND spectype='GALAXY' AND zwarn=0 AND z>0 AND z<2 AND glon>=0 AND glon<360 AND glat>=-90 AND glat<90",
      "maxrec": 2
    }
  ],
  "selection": {
    "desi": "All survey/program entries with zcat_primary=true, spectype=GALAXY, zwarn=0, 0<z<2 and valid Galactic coordinate ranges. One preferred spectrum per target according to the catalog flag; not an independent identity audit.",
    "cf4": "All published Table 2 records; all 55,877 PGC identifiers are unique in this table."
  },
  "limitations": [
    "DESI individual spectra were processed remotely into counts; their full individual records are not stored here.",
    "Five-degree cells have unequal solid angle. Counts trace both survey selection and structure, not completeness-corrected density.",
    "DESI barycentric redshifts and CF4 CMB-frame systemic velocities have not been frame-matched or cross-matched.",
    "CF4 combined moduli already share a calibration scale; per-row errors are not a full independent covariance model.",
    "CF4 method flags overlap. Counts across methods must not be added as independent galaxies.",
    "No peculiar velocity, dark matter mass, dark energy parameter or Great Attractor detection is fitted by this inventory."
  ]
}