{
  "generated_utc": "2026-09-22T07:15:18.778101+00:00",
  "reproduction": "python scripts/diagnose_phenomt_rotation.py --backend torch jax --case baseline single_spin equal_mass high_mass_ratio --only22 1 0 --sample-rate 2048 --samples 257 --output receipt.json",
  "versions": {
    "python": "3.13.7",
    "numpy": "2.5.3",
    "lalsimulation": "6.2.1",
    "torch": "2.14.0",
    "jax": "0.11.2"
  },
  "dtype": "float64",
  "device": "cpu",
  "precession_version": 300,
  "final_spin_mod": 4,
  "parameters": {
    "baseline": {
      "mass1": 40.0,
      "mass2": 15.0,
      "spin1": [
        0.2,
        0.1,
        0.3
      ],
      "spin2": [
        0.0,
        0.1,
        -0.2
      ],
      "distance_mpc": 100.0,
      "inclination": 0.8,
      "phic": 0.3,
      "f_lower_hz": 20.0,
      "f_ref_hz": 20.0
    },
    "single_spin": {
      "mass1": 35.0,
      "mass2": 20.0,
      "spin1": [
        0.3,
        0.0,
        0.4
      ],
      "spin2": [
        0.0,
        0.0,
        0.0
      ],
      "distance_mpc": 100.0,
      "inclination": 1.1,
      "phic": 0.2,
      "f_lower_hz": 20.0,
      "f_ref_hz": 30.0
    },
    "equal_mass": {
      "mass1": 30.0,
      "mass2": 30.0,
      "spin1": [
        0.2,
        -0.1,
        0.4
      ],
      "spin2": [
        -0.12,
        0.08,
        -0.3
      ],
      "distance_mpc": 100.0,
      "inclination": 0.8,
      "phic": 0.3,
      "f_lower_hz": 20.0,
      "f_ref_hz": 20.0
    },
    "high_mass_ratio": {
      "mass1": 60.0,
      "mass2": 6.0,
      "spin1": [
        0.2,
        0.1,
        0.8
      ],
      "spin2": [
        0.1,
        0.0,
        0.1
      ],
      "distance_mpc": 100.0,
      "inclination": 1.2,
      "phic": 0.1,
      "f_lower_hz": 20.0,
      "f_ref_hz": 20.0
    }
  },
  "scope": "Isolated project_modes rotation/convention checks against public binary J-frame and L0 modes; does not validate native spin evolution, carrier, or physical waveform accuracy.",
  "conventions": {
    "angles": "Public alpha, acos(cosbeta), epsilon series are passed as alpha,beta,gamma.",
    "projection": "J-frame modes are projected at phi=0 with exp(2 i zeta), matching project_modes.",
    "modes": "only22=1 checks the complete l=2 set; only22=0 checks all available l=2..5 signed modes.",
    "relative_l2": "norm(project_modes output - direct J-frame projection)/norm(direct projection).",
    "inverse_l0": "For f_ref=f_min=20 Hz, Eq. 8 uses constants (-gamma_ref,-beta_ref,-alpha_ref) on all signed J modes and compares with public L0Modes.",
    "inverse_l0_status": "Full-mode inverse values are measured diagnostics; only22 inverse values are suitable for the strict convention check."
  },
  "results": [
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