UNNS GRAVITY BRIDGE v0.1 — SPARC PREPARATION VALIDATION
Date: 2026-07-26
Status: DATA_PREPARED_CHAMBERS_NOT_RUN

SOURCE AUDIT
- SPARC catalogue: 175 unique galaxies
- Combined mass models: 3,391 radial rows / 175 galaxies
- Rotmod archive: 175 individual files
- Individual versus combined exact matches: 175/175

DERIVED CORPUS
- Valid prepared rows: 3,389
- Excluded source rows: 2
- Excluded galaxy/radii:
galaxy_id  radius_kpc                             exclusion_reason
 UGC01281        0.08 NONPOSITIVE_SIGNED_BARYONIC_VELOCITY_SQUARED
 UGC01281        0.23 NONPOSITIVE_SIGNED_BARYONIC_VELOCITY_SQUARED

SAMPLE COUNTS
- PRIMARY: 121 galaxies
- INCLINATION_SENSITIVITY: 115 galaxies
- RESOLUTION_SENSITIVITY: 75 galaxies
- STRICT_SENSITIVITY: 74 galaxies
- BROAD_Q12: 163 galaxies
- Q3_SENSITIVITY: 12 galaxies

LADDER AUDIT
- Paired STRUC-I / STRUC-PERC-I ladders: 175
- READY: 175
- PRIMARY inputs: 121
- Interpolation used: 0 ladders
- Cross-chamber numerical equality: PASS
- Observed prepared g_bar reproduction: PASS

CANONICAL CHAMBERS
- STRUC-I v1.0.4 SHA256:
  df0919cd2c11d1e21c7d39ed200f2d5ffad7e0c0a6496bc21001ddd9267fa3ae
- STRUC-PERC-I v2.5.0 SHA256:
  844b84e4f1d681a4363207974061bbee62fdc69904990a9387bdaa2bb8b71200
- Chamber export files present: 0
- Chamber execution performed: NO

VALIDATION COMMANDS
python data/prepare_sparc_corpus.py
python ladders/galaxy_profile_to_ladder.py
python validation/validate_sparc_preparation.py
python validation/validate_ladders.py
python -m py_compile <all Python files>

All completed successfully.
