{
  "generated_utc": "2026-09-22T06:16:47.798525+00:00",
  "reproduction": "python scripts/diagnose_phenomt_precession.py --backend torch --case high_mass_ratio --sample-rate 2048 --backward-steps 128 512 2048 4096 --output receipt.json",
  "versions": {
    "python": "3.13.7",
    "numpy": "2.5.3",
    "lalsimulation": "6.2.1",
    "torch": "2.14.0"
  },
  "dtype": "float64",
  "device": "cpu",
  "precession_version": 300,
  "final_spin_mod": 4,
  "parameters": {
    "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
    }
  },
  "conventions": {
    "coprec22": "Native h22 uses the native evolved final spin. One phase rotation fixes the first sample to the reference phase; no time shift, amplitude scaling, or fit.",
    "polarizations": "IMRPhenomTP hplus-i*hcross; no alignment or scaling.",
    "relative_l2": "norm(actual-reference)/norm(reference)",
    "mismatch": "1-abs(vdot(actual,reference))/(norm(actual)*norm(reference)); unweighted, constant-phase maximization only, no time shift",
    "beta": "Native minus reference opening angle at the listed sample times.",
    "resolution": "Forward step count is half the backward count; both cover the full intrinsic interval. Consecutive native waveforms use the same output grid."
  },
  "results": [
    {
      "case": "high_mass_ratio",
      "backend": "torch",
      "sample_rate_hz": 2048,
      "backward_steps": 128,
      "forward_steps": 64,
      "native_final_spin": 0.8734413461358469,
      "samples": 5718,
      "epoch_seconds": -2.629817046,
      "mode_phase_anchor_radians": -0.00014043658848095222,
      "coprec22": {
        "all": {
          "relative_l2": 0.0003051885583438765,
          "mismatch": 4.651089147156284e-08
        },
        "inspiral": {
          "relative_l2": 4.160899358389319e-05,
          "mismatch": 7.664511247895689e-10
        },
        "ringdown": {
          "relative_l2": 0.0021754145212141253,
          "mismatch": 1.5917707403279024e-06
        }
      },
      "coprec22_amplitude_relative_l2": 5.755442479394958e-05,
      "beta_sample_times_seconds": [
        -2.629817046,
        -0.9999342334999999,
        -0.10003188974999988,
        6.576650000011952e-05
      ],
      "beta_difference_radians": [
        -3.22994183144798e-05,
        -0.003062611358119527,
        0.009529861367253256,
        -0.010476882496363193
      ],
      "polarizations": {
        "relative_l2": 0.30844261210902935,
        "mismatch": 0.047540005585508416
      },
      "invariant_absolute_errors": {
        "lhat": 2.220446049250313e-16,
        "tangent": 2.220446049250313e-16,
        "spin1": 2.220446049250313e-16,
        "spin2": 2.168404344971009e-19,
        "lhat_dot_tangent": 1.1102230246251565e-16
      }
    },
    {
      "case": "high_mass_ratio",
      "backend": "torch",
      "sample_rate_hz": 2048,
      "backward_steps": 512,
      "forward_steps": 256,
      "native_final_spin": 0.8734339035652005,
      "samples": 5718,
      "epoch_seconds": -2.629817046,
      "mode_phase_anchor_radians": -0.00014043658848095222,
      "coprec22": {
        "all": {
          "relative_l2": 0.00031379881737303526,
          "mismatch": 4.916789586584258e-08
        },
        "inspiral": {
          "relative_l2": 4.160899358389319e-05,
          "mismatch": 7.664511247895689e-10
        },
        "ringdown": {
          "relative_l2": 0.0022379129686461038,
          "mismatch": 1.6824939168547104e-06
        }
      },
      "coprec22_amplitude_relative_l2": 5.917102099997951e-05,
      "beta_sample_times_seconds": [
        -2.629817046,
        -0.9999342334999999,
        -0.10003188974999988,
        6.576650000011952e-05
      ],
      "beta_difference_radians": [
        -3.229941871754627e-05,
        -0.003092440698323734,
        0.009680821512251692,
        -0.010515040414119742
      ],
      "polarizations": {
        "relative_l2": 0.30842246643175236,
        "mismatch": 0.04753420166501798
      },
      "invariant_absolute_errors": {
        "lhat": 2.220446049250313e-16,
        "tangent": 2.220446049250313e-16,
        "spin1": 2.220446049250313e-16,
        "spin2": 2.168404344971009e-19,
        "lhat_dot_tangent": 1.1102230246251565e-16
      },
      "relative_l2_from_previous_resolution": 0.0001759356533970171
    },
    {
      "case": "high_mass_ratio",
      "backend": "torch",
      "sample_rate_hz": 2048,
      "backward_steps": 2048,
      "forward_steps": 1024,
      "native_final_spin": 0.8734338931529954,
      "samples": 5718,
      "epoch_seconds": -2.629817046,
      "mode_phase_anchor_radians": -0.00014043658848095222,
      "coprec22": {
        "all": {
          "relative_l2": 0.0003138108659188594,
          "mismatch": 4.917166540607809e-08
        },
        "inspiral": {
          "relative_l2": 4.160899358389319e-05,
          "mismatch": 7.664511247895689e-10
        },
        "ringdown": {
          "relative_l2": 0.0022380004025706808,
          "mismatch": 1.682622596699268e-06
        }
      },
      "coprec22_amplitude_relative_l2": 5.91732825268554e-05,
      "beta_sample_times_seconds": [
        -2.629817046,
        -0.9999342334999999,
        -0.10003188974999988,
        6.576650000011952e-05
      ],
      "beta_difference_radians": [
        -3.229941869895003e-05,
        -0.003092617950428672,
        0.009681437243448276,
        -0.010515225930296496
      ],
      "polarizations": {
        "relative_l2": 0.3084223695220892,
        "mismatch": 0.04753417277866945
      },
      "invariant_absolute_errors": {
        "lhat": 2.220446049250313e-16,
        "tangent": 2.220446049250313e-16,
        "spin1": 3.3306690738754696e-16,
        "spin2": 2.168404344971009e-19,
        "lhat_dot_tangent": 1.1102230246251565e-16
      },
      "relative_l2_from_previous_resolution": 6.366137452535795e-07
    },
    {
      "case": "high_mass_ratio",
      "backend": "torch",
      "sample_rate_hz": 2048,
      "backward_steps": 4096,
      "forward_steps": 2048,
      "native_final_spin": 0.8734338931327075,
      "samples": 5718,
      "epoch_seconds": -2.629817046,
      "mode_phase_anchor_radians": -0.00014043658848095222,
      "coprec22": {
        "all": {
          "relative_l2": 0.00031381088939810625,
          "mismatch": 4.917167306661696e-08
        },
        "inspiral": {
          "relative_l2": 4.160899358389319e-05,
          "mismatch": 7.664511247895689e-10
        },
        "ringdown": {
          "relative_l2": 0.0022380005729548944,
          "mismatch": 1.6826228469435378e-06
        }
      },
      "coprec22_amplitude_relative_l2": 5.917328692617431e-05,
      "beta_sample_times_seconds": [
        -2.629817046,
        -0.9999342334999999,
        -0.10003188974999988,
        6.576650000011952e-05
      ],
      "beta_difference_radians": [
        -3.229941869747899e-05,
        -0.003092618657244889,
        0.009681439468077924,
        -0.010515226638308672
      ],
      "polarizations": {
        "relative_l2": 0.30842236914487564,
        "mismatch": 0.04753417266544324
      },
      "invariant_absolute_errors": {
        "lhat": 2.220446049250313e-16,
        "tangent": 2.220446049250313e-16,
        "spin1": 3.3306690738754696e-16,
        "spin2": 2.168404344971009e-19,
        "lhat_dot_tangent": 1.1102230246251565e-16
      },
      "relative_l2_from_previous_resolution": 2.3201371137523476e-09
    }
  ]
}