{
  "schema_version": "fwdvar_diagnostics_v4",
  "issues": [
    {
      "code": "low_tier",
      "scope": "expiry",
      "severity": "WARN",
      "expiry_dt": "2026-09-29",
      "interval_from": null,
      "interval_to": null,
      "strike": null,
      "target_key": "2026-09-29",
      "message_short": "LOW tier (direct straddle)",
      "message_long": "Accept tier: LOW (DIRECT_STRADDLE_ONLY path)",
      "metrics": {}
    },
    {
      "code": "low_tier",
      "scope": "expiry",
      "severity": "WARN",
      "expiry_dt": "2026-12-29",
      "interval_from": null,
      "interval_to": null,
      "strike": null,
      "target_key": "2026-12-29",
      "message_short": "LOW tier (direct straddle)",
      "message_long": "Accept tier: LOW (DIRECT_STRADDLE_ONLY path)",
      "metrics": {}
    },
    {
      "code": "rejected",
      "scope": "expiry",
      "severity": "INFO",
      "expiry_dt": "2027-03-30",
      "interval_from": null,
      "interval_to": null,
      "strike": null,
      "target_key": "2027-03-30",
      "message_short": "Rejected: insufficient_strikes",
      "message_long": "Expiry rejected: insufficient_strikes",
      "metrics": {
        "reject_reason": "insufficient_strikes"
      }
    },
    {
      "code": "low_source",
      "scope": "interval",
      "severity": "WARN",
      "expiry_dt": null,
      "interval_from": "2026-06-23",
      "interval_to": "2026-06-30",
      "strike": null,
      "target_key": "06-23\u219206-30",
      "message_short": "LOW confidence",
      "message_long": "Event confidence: LOW (baseline not robust)",
      "metrics": {
        "confidence": "LOW"
      }
    },
    {
      "code": "baseline_fallback",
      "scope": "interval",
      "severity": "WARN",
      "expiry_dt": null,
      "interval_from": "2026-06-30",
      "interval_to": "2026-07-07",
      "strike": null,
      "target_key": "06-30\u219207-07",
      "message_short": "Baseline fallback",
      "message_long": "Baseline quality: FALLBACK (edge case)",
      "metrics": {
        "baseline_n": 0
      }
    },
    {
      "code": "low_source",
      "scope": "interval",
      "severity": "WARN",
      "expiry_dt": null,
      "interval_from": "2026-06-30",
      "interval_to": "2026-07-07",
      "strike": null,
      "target_key": "06-30\u219207-07",
      "message_short": "LOW confidence",
      "message_long": "Event confidence: LOW (baseline not robust)",
      "metrics": {
        "confidence": "LOW"
      }
    },
    {
      "code": "baseline_fallback",
      "scope": "interval",
      "severity": "WARN",
      "expiry_dt": null,
      "interval_from": "2026-07-07",
      "interval_to": "2026-07-28",
      "strike": null,
      "target_key": "07-07\u219207-28",
      "message_short": "Baseline fallback",
      "message_long": "Baseline quality: FALLBACK (edge case)",
      "metrics": {
        "baseline_n": 1
      }
    },
    {
      "code": "low_source",
      "scope": "interval",
      "severity": "WARN",
      "expiry_dt": null,
      "interval_from": "2026-07-07",
      "interval_to": "2026-07-28",
      "strike": null,
      "target_key": "07-07\u219207-28",
      "message_short": "LOW confidence",
      "message_long": "Event confidence: LOW (baseline not robust)",
      "metrics": {
        "confidence": "LOW"
      }
    },
    {
      "code": "low_source",
      "scope": "interval",
      "severity": "WARN",
      "expiry_dt": null,
      "interval_from": "2026-07-28",
      "interval_to": "2026-08-25",
      "strike": null,
      "target_key": "07-28\u219208-25",
      "message_short": "LOW confidence",
      "message_long": "Event confidence: LOW (baseline not robust)",
      "metrics": {
        "confidence": "LOW"
      }
    },
    {
      "code": "low_coverage",
      "scope": "run",
      "severity": "WARN",
      "expiry_dt": null,
      "interval_from": null,
      "interval_to": null,
      "strike": null,
      "target_key": "run",
      "message_short": "Low coverage (35%)",
      "message_long": "Weighted-mid coverage: 34.8% (threshold: 50%)",
      "metrics": {
        "avg_coverage": 34.78260869565217,
        "threshold": 50.0
      }
    }
  ],
  "summary": {
    "total": 10,
    "fail_count": 0,
    "warn_count": 9,
    "info_count": 1
  },
  "derived": {
    "structure_summary": {
      "iv_7d": {
        "pct": 30.083795965819505,
        "pct_cal": 17.679523257721073,
        "actual_dte": 8,
        "expiry_date": "2026-06-16",
        "tau_eff": 0.007800762923522661,
        "tau_cal": 0.022587140267922787,
        "tau_ratio": 2.8955040025396523
      },
      "iv_30d": {
        "pct": 28.798869730456012,
        "pct_cal": 16.288561066619376,
        "actual_dte": 29,
        "expiry_date": "2026-07-07",
        "tau_eff": 0.02561825249714411,
        "tau_cal": 0.08008200679769692,
        "tau_ratio": 3.125974607621045
      },
      "iv_90d": {
        "pct": 26.700378246328555,
        "pct_cal": 15.084454801899854,
        "actual_dte": 78,
        "expiry_date": "2026-08-25",
        "tau_eff": 0.06837829527190305,
        "tau_cal": 0.21423669536716985,
        "tau_ratio": 3.1331096295288994
      },
      "front_slope_pct": -1.2849262353634927,
      "back_slope_pct": -2.0984914841274573,
      "max_fwd_vol_pct": 29.68056554985294,
      "max_fwd_vol_interval": {
        "from": "2026-06-16",
        "to": "2026-06-23"
      },
      "max_fwd_vol_dte_range": {
        "start_dte": 8,
        "end_dte": 15
      },
      "neg_interval_count": 0,
      "clock_primary": "variance_time",
      "clock_secondary": "calendar",
      "vt_vintage": "202605",
      "beta_on": 0.1449158863564541,
      "beta_we": 0.18208533750086023,
      "quote_context_dt": "2026-06-08T09:30:04.062281+05:30",
      "effective_quote_policy": "weighted_mid",
      "tau_mode_math": "variance_time",
      "rr_25d": null,
      "fly_25d": null,
      "put_iv_25d": null,
      "call_iv_25d": null,
      "rr_fly_diagnostics": null
    },
    "interval_leaderboard": {
      "highest": [
        {
          "from": "2026-06-16",
          "to": "2026-06-23",
          "start_dte": 8,
          "end_dte": 15,
          "forward_vol": 0.2968056554985294,
          "forward_variance": 0.08809359713591171
        },
        {
          "from": "2026-06-23",
          "to": "2026-06-30",
          "start_dte": 15,
          "end_dte": 22,
          "forward_vol": 0.2838279057336314,
          "forward_variance": 0.08055828007313916
        },
        {
          "from": "2026-06-30",
          "to": "2026-07-07",
          "start_dte": 22,
          "end_dte": 29,
          "forward_vol": 0.2651428591834823,
          "forward_variance": 0.07030073577599191
        },
        {
          "from": "2026-07-07",
          "to": "2026-07-28",
          "start_dte": 29,
          "end_dte": 50,
          "forward_vol": 0.26296969131115594,
          "forward_variance": 0.06915305854828463
        },
        {
          "from": "2026-07-28",
          "to": "2026-08-25",
          "start_dte": 50,
          "end_dte": 78,
          "forward_vol": 0.246340621420375,
          "forward_variance": 0.06068370176177651
        }
      ],
      "lowest": [
        {
          "from": "2026-08-25",
          "to": "2026-09-29",
          "start_dte": 78,
          "end_dte": 113,
          "forward_vol": 0.23285090283165716,
          "forward_variance": 0.05421954294951785
        },
        {
          "from": "2026-09-29",
          "to": "2026-12-29",
          "start_dte": 113,
          "end_dte": 204,
          "forward_vol": 0.24132273732777074,
          "forward_variance": 0.05823666355136823
        },
        {
          "from": "2026-07-28",
          "to": "2026-08-25",
          "start_dte": 50,
          "end_dte": 78,
          "forward_vol": 0.246340621420375,
          "forward_variance": 0.06068370176177651
        },
        {
          "from": "2026-07-07",
          "to": "2026-07-28",
          "start_dte": 29,
          "end_dte": 50,
          "forward_vol": 0.26296969131115594,
          "forward_variance": 0.06915305854828463
        },
        {
          "from": "2026-06-30",
          "to": "2026-07-07",
          "start_dte": 22,
          "end_dte": 29,
          "forward_vol": 0.2651428591834823,
          "forward_variance": 0.07030073577599191
        }
      ],
      "neg_intervals": []
    },
    "forward_volatility_matrix": {
      "schema_version": "fwdvol_matrix_v2",
      "status": "available",
      "expiry_filter_policy_version": "usable_expiries_v1",
      "expiry_dates": [
        "2026-06-16",
        "2026-06-23",
        "2026-06-30",
        "2026-07-07",
        "2026-07-28",
        "2026-08-25",
        "2026-09-29",
        "2026-12-29"
      ],
      "dte_days": [
        8,
        15,
        22,
        29,
        50,
        78,
        113,
        204
      ],
      "matrix_fwdvol_pct": [
        [
          null,
          29.68056554985294,
          29.067074074301587,
          28.217899849943397,
          27.26085016424292,
          26.2329887856895,
          25.293962384887593,
          24.764804914578626
        ],
        [
          null,
          null,
          28.382790573363142,
          27.423873870932468,
          26.741937873331363,
          25.817656225580336,
          24.946988419608875,
          24.56034002399876
        ],
        [
          null,
          null,
          null,
          26.51428591834823,
          26.351466345387962,
          25.507222469036883,
          24.684955631612013,
          24.412471892366156
        ],
        [
          null,
          null,
          null,
          null,
          26.296969131115596,
          25.36009189629474,
          24.525242382407225,
          24.323267258471542
        ],
        [
          null,
          null,
          null,
          null,
          null,
          24.6340621420375,
          23.8996463675126,
          24.036607701587073
        ],
        [
          null,
          null,
          null,
          null,
          null,
          null,
          23.285090283165715,
          23.898904299404045
        ],
        [
          null,
          null,
          null,
          null,
          null,
          null,
          null,
          24.132273732777072
        ],
        [
          null,
          null,
          null,
          null,
          null,
          null,
          null,
          null
        ]
      ],
      "neg_mask": [
        [
          false,
          false,
          false,
          false,
          false,
          false,
          false,
          false
        ],
        [
          false,
          false,
          false,
          false,
          false,
          false,
          false,
          false
        ],
        [
          false,
          false,
          false,
          false,
          false,
          false,
          false,
          false
        ],
        [
          false,
          false,
          false,
          false,
          false,
          false,
          false,
          false
        ],
        [
          false,
          false,
          false,
          false,
          false,
          false,
          false,
          false
        ],
        [
          false,
          false,
          false,
          false,
          false,
          false,
          false,
          false
        ],
        [
          false,
          false,
          false,
          false,
          false,
          false,
          false,
          false
        ],
        [
          false,
          false,
          false,
          false,
          false,
          false,
          false,
          false
        ]
      ],
      "clip": {
        "method": "percentile",
        "p_lo": 5,
        "p_hi": 95,
        "vmin": 23.89916402324204,
        "vmax": 28.82757484897313
      },
      "usable_count": 8,
      "excluded": []
    },
    "expiry_quality_summary": {
      "schema_version": "expiry_quality_summary_v1",
      "filter_policy_version": "usable_expiries_v1",
      "total_count": 9,
      "usable_count": 8,
      "excluded": [
        {
          "expiry_date": "2027-03-30",
          "dte_days": 295,
          "reject_reason": "insufficient_strikes",
          "accept_tier": null,
          "why": "insufficient_strikes"
        }
      ]
    },
    "build_metadata": {
      "git_commit": "588e6e5f1",
      "build_timestamp": "2026-06-08T04:00:08.537890+00:00",
      "python_version": "3.13"
    },
    "request_echo": {
      "event_windows_requested": false,
      "sliding_windows_requested": false,
      "diagnostics_level": "lite",
      "tau_mode": "variance_time",
      "event_windows_exported": false,
      "event_windows_count": 0,
      "sliding_windows_exported": false,
      "ui_presets_exported": true,
      "ui_presets_events_count": 0,
      "ui_presets_missing_reason": null,
      "required_iv_tenors": []
    },
    "ui_limits": {
      "max_horizon_days": 56,
      "max_horizon_label": "8w_liquid",
      "min_horizon_days": 0,
      "tz": "Asia/Kolkata",
      "notes": "UI clamps horizon; avoid LEAPS/illiquid expiries beyond 8 weeks"
    },
    "ui_capabilities": {
      "schema_version": "ui_capabilities_v1",
      "generated_at_utc": "2026-06-08T04:00:08.538393+00:00",
      "source": "volstrats.analytics.ui_capabilities.build_ui_capabilities",
      "filter_policy": {
        "name": "UI_GRADE",
        "version": "usable_expiries_v1"
      },
      "missing_reason": null,
      "features": {
        "forward_matrix_json": false,
        "quote_cards_html": false,
        "event_window_tool": false,
        "sliding_windows": false,
        "smile_density_plots": false,
        "chain_snapshots": false,
        "carry_data": true
      },
      "counts": {
        "usable_expiries": 8,
        "excluded_expiries": 1,
        "neg_cells": 0,
        "issues_fail": 0,
        "issues_warn": 9
      }
    },
    "ui_presets": {
      "schema_version": "ui_presets_v1",
      "generated_at_utc": "2026-06-08T04:00:08.541394+00:00",
      "asof_iso": "2026-06-08T09:30:04.062281+05:30",
      "asof_source": "structure_summary.quote_context_dt",
      "horizon_days": 56,
      "tz": "Asia/Kolkata",
      "source": "market_calendar.list_upcoming_events",
      "id_namespace": "market_calendar",
      "id_format": "CATEGORY_YYYYMM",
      "events": []
    }
  }
}