Study 07 SgrA Milky Way Corpus

Study 07 — Corpus: Sgr A* 2017 public visibilities

Product 2022-D02-01 (First Sagittarius A* EHT Results: Calibrated Data). Ingested 2026-07-23 from the public GitHub mirror. Every byte below is public; digests are SHA-256 of the files as pulled.

Pull record

Item	Value
Source URL	https://github.com/eventhorizontelescope/2022-D02-01/raw/main/EHTC_FirstSgrAResults_May2022_csv.tgz
Tarball	EHTC_FirstSgrAResults_May2022_csv.tgz
Bytes	7,083,259
SHA-256	709f322cd825669e1b30dacb3c9093f016ae3c931a19366b7b29f536ed0baebb
Primary grading surface	csv/ (non-normalized Stokes I)
Named processing variant	csv_norm/ (lightcurve-normalized — Paper III static imaging input)
Reproduce	curl -L -o EHTC_FirstSgrAResults_May2022_csv.tgz 'https://github.com/eventhorizontelescope/2022-D02-01/raw/main/EHTC_FirstSgrAResults_May2022_csv.tgz' && shasum -a 256 EHTC_FirstSgrAResults_May2022_csv.tgz

File inventory (16 CSV)

Path	Product	Bytes	SHA-256 (prefix)
csv/ER6_SGRA_2017_096_hi_casa_netcal-LMTcal_StokesI.csv	csv	1,082,760	7ef5bd7f6fdc261b…
csv/ER6_SGRA_2017_096_hi_hops_netcal-LMTcal_StokesI.csv	csv	1,117,260	8bc1bd0b2834b8a6…
csv/ER6_SGRA_2017_096_lo_casa_netcal-LMTcal_StokesI.csv	csv	1,027,197	225b698525ffdd02…
csv/ER6_SGRA_2017_096_lo_hops_netcal-LMTcal_StokesI.csv	csv	1,053,304	89429b2a65ba9e9a…
csv/ER6_SGRA_2017_097_hi_casa_netcal-LMTcal_StokesI.csv	csv	1,092,954	76aab2d2500d03c4…
csv/ER6_SGRA_2017_097_hi_hops_netcal-LMTcal_StokesI.csv	csv	1,247,937	62f2671aacd867f6…
csv/ER6_SGRA_2017_097_lo_casa_netcal-LMTcal_StokesI.csv	csv	1,257,848	a5a40d58da509699…
csv/ER6_SGRA_2017_097_lo_hops_netcal-LMTcal_StokesI.csv	csv	1,419,016	8f02526ecc8fb85f…
csv_norm/ER6_SGRA_2017_096_hi_casa_netcal-LMTcal-norm_StokesI.csv	csv_norm	1,082,760	a1a9a93f4d09fd79…
csv_norm/ER6_SGRA_2017_096_hi_hops_netcal-LMTcal-norm_StokesI.csv	csv_norm	1,117,260	e3d2e204ec27c706…
csv_norm/ER6_SGRA_2017_096_lo_casa_netcal-LMTcal-norm_StokesI.csv	csv_norm	1,027,197	1fcdd490abe7b804…
csv_norm/ER6_SGRA_2017_096_lo_hops_netcal-LMTcal-norm_StokesI.csv	csv_norm	1,053,304	5d509e3efe361fd1…
csv_norm/ER6_SGRA_2017_097_hi_casa_netcal-LMTcal-norm_StokesI.csv	csv_norm	1,092,954	6f79cd657851da9c…
csv_norm/ER6_SGRA_2017_097_hi_hops_netcal-LMTcal-norm_StokesI.csv	csv_norm	1,247,937	44bf5fb7c1421425…
csv_norm/ER6_SGRA_2017_097_lo_casa_netcal-LMTcal-norm_StokesI.csv	csv_norm	1,257,848	f7f3b3d292432db7…
csv_norm/ER6_SGRA_2017_097_lo_hops_netcal-LMTcal-norm_StokesI.csv	csv_norm	1,419,016	4f85581f730cbc06…

Full digests and per-file integer metrics live in corpus/study-07/study07_ledger.json in the research repository.

What the corpus contains (machine summary)

Eight primary csv/ strata (2 days × 2 bands × 2 pipelines). Observed envelope used to freeze the law:

Pin	Integer
Short-baseline median amp min…max	2,100,435 … 2,516,890 µJy
Long-baseline (q ≥ 4000 Mλ) median min…max	103,266 … 135,455 µJy
Short/long ratio (parts per thousand) min…max	18,581 … 21,168
Closure-sector concentration min…max	445 … 509 ppt
Scramble-null concentration max	379 ppt
Min (real − null) concentration	122 ppt

This inventory is the 2017 EHT Stokes-I CSV set. ALMA CMZ slim filaments (cited 2026-08-24) are not in this tarball and have no SHA-256 row here. See the charter.

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