{
  "all_zero_trials_explained_by_event_timing": true,
  "implementation_note": "Initial report serialization stopped on pandas NaN for absent pre-US events; serialize original null-bearing records instead. No scientific result changed.",
  "limits": [
    "Descriptive reuse of known seeds, not independent validation.",
    "Gate absence is diagnosed, upstream cause of onset variability is not established.",
    "No new window or US selection on old heldout outcomes."
  ],
  "new_candidate": false,
  "new_simulations": 0,
  "phase": "4T",
  "reason_counts": [
    {
      "count": 5,
      "label": "CAL_A",
      "reason": "credit_present",
      "split": "cal"
    },
    {
      "count": 5,
      "label": "CAL_B",
      "reason": "credit_present",
      "split": "cal"
    },
    {
      "count": 2,
      "label": "CAL_A",
      "reason": "credit_present",
      "split": "held"
    },
    {
      "count": 3,
      "label": "CAL_A",
      "reason": "target_onset_after_US",
      "split": "held"
    },
    {
      "count": 5,
      "label": "CAL_B",
      "reason": "credit_present",
      "split": "held"
    }
  ],
  "reproduction": [
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "cal-CAL_A-54101"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "cal-CAL_A-54102"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "cal-CAL_A-54103"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "cal-CAL_A-54104"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "cal-CAL_A-54105"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "cal-CAL_B-54101"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "cal-CAL_B-54102"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "cal-CAL_B-54103"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "cal-CAL_B-54104"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "cal-CAL_B-54105"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "held-CAL_A-55101"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "held-CAL_A-55102"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "held-CAL_A-55103"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "held-CAL_A-55104"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "held-CAL_A-55105"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "held-CAL_B-55101"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "held-CAL_B-55102"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "held-CAL_B-55103"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "held-CAL_B-55104"
    },
    {
      "independent_oracle_exact": true,
      "matched_exact": true,
      "random_exact": true,
      "trial": "held-CAL_B-55105"
    }
  ],
  "source_phase": "4S",
  "stage": "P0 event diagnosis",
  "target_compartment": "y5B'2a",
  "target_edge_total": 2109,
  "target_source_KC_total": 2083,
  "time_semantics": "Original gate uses emission times, including same-step KC. Equal +18 steps on KC and US preserves relative ages; no asymmetric arrival correction.",
  "trials": 20,
  "wall_seconds": 0.8374417159998302,
  "weight_updates": 0,
  "zero_credit_trials": [
    {
      "KC_active": 164,
      "KC_events": 187,
      "edge_coverage_fraction": 0.03319108582266477,
      "edges_covered_any_time": 70,
      "events_sha256": "8eb1af9c9d36081aea82a58948a129ff3b56c89eb3e1ec7285d0004c3ee9e2ac",
      "first_after_US_ms": 20.3,
      "first_target_ms": 20.3,
      "gate_active_KC": 0,
      "gate_covered_edges": 0,
      "gate_events": 0,
      "label": "CAL_A",
      "last_before_US_ms": null,
      "last_target_ms": 107.9,
      "matched_credit": 0.0,
      "peak_bin_start_ms": 20,
      "random_expectation": 1.0365466396013896,
      "reason": "target_onset_after_US",
      "seed": 55102,
      "source_file": "/data/digital-drosophila/experiments/phase4s-timing-credit/events/held-CAL_A-55102.parquet",
      "split": "held",
      "target_active_KC": 69,
      "target_edge_total": 2109,
      "target_events": 75,
      "target_source_KC_total": 2083
    },
    {
      "KC_active": 171,
      "KC_events": 194,
      "edge_coverage_fraction": 0.02939781887150308,
      "edges_covered_any_time": 62,
      "events_sha256": "b9a6d94ca075bec04d47201c220807ef39127d5ec8414fc41003529bc1ed3e5d",
      "first_after_US_ms": 20.200000000000003,
      "first_target_ms": 20.200000000000003,
      "gate_active_KC": 0,
      "gate_covered_edges": 0,
      "gate_events": 0,
      "label": "CAL_A",
      "last_before_US_ms": null,
      "last_target_ms": 110.0,
      "matched_credit": 0.0,
      "peak_bin_start_ms": 20,
      "random_expectation": 0.9274364670117696,
      "reason": "target_onset_after_US",
      "seed": 55103,
      "source_file": "/data/digital-drosophila/experiments/phase4s-timing-credit/events/held-CAL_A-55103.parquet",
      "split": "held",
      "target_active_KC": 61,
      "target_edge_total": 2109,
      "target_events": 67,
      "target_source_KC_total": 2083
    },
    {
      "KC_active": 157,
      "KC_events": 183,
      "edge_coverage_fraction": 0.03698435277382646,
      "edges_covered_any_time": 78,
      "events_sha256": "c297e521678ad9dddd001ca59fda1771d8f81cce215483753563594c36a4e1fc",
      "first_after_US_ms": 20.1,
      "first_target_ms": 20.1,
      "gate_active_KC": 0,
      "gate_covered_edges": 0,
      "gate_events": 0,
      "label": "CAL_A",
      "last_before_US_ms": null,
      "last_target_ms": 117.0,
      "matched_credit": 0.0,
      "peak_bin_start_ms": 25,
      "random_expectation": 1.1712399242570002,
      "reason": "target_onset_after_US",
      "seed": 55105,
      "source_file": "/data/digital-drosophila/experiments/phase4s-timing-credit/events/held-CAL_A-55105.parquet",
      "split": "held",
      "target_active_KC": 75,
      "target_edge_total": 2109,
      "target_events": 83,
      "target_source_KC_total": 2083
    }
  ]
}