{
  "schema_version": "fwdvar_diagnostics_v4",
  "issues": [
    {
      "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": "2026-06-16",
      "interval_to": "2026-06-30",
      "strike": null,
      "target_key": "06-16\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": "2026-07-28",
      "strike": null,
      "target_key": "06-30\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": "2026-06-30",
      "interval_to": "2026-07-28",
      "strike": null,
      "target_key": "06-30\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": "2026-09-29",
      "interval_to": "2026-12-29",
      "strike": null,
      "target_key": "09-29\u219212-29",
      "message_short": "LOW confidence",
      "message_long": "Event confidence: LOW (baseline not robust)",
      "metrics": {
        "confidence": "LOW"
      }
    },
    {
      "code": "elevated_fwdvol",
      "scope": "interval",
      "severity": "WARN",
      "expiry_dt": null,
      "interval_from": "2026-05-26",
      "interval_to": "2026-06-02",
      "strike": null,
      "target_key": "05-26\u219206-02",
      "message_short": "Elevated fwd vol (30.8%)",
      "message_long": "Forward volatility: 30.8% (threshold: 30%)",
      "metrics": {
        "fwd_vol": 0.3082940999701243,
        "threshold": 0.3
      }
    },
    {
      "code": "elevated_fwdvol",
      "scope": "interval",
      "severity": "WARN",
      "expiry_dt": null,
      "interval_from": "2026-06-02",
      "interval_to": "2026-06-09",
      "strike": null,
      "target_key": "06-02\u219206-09",
      "message_short": "Elevated fwd vol (31.8%)",
      "message_long": "Forward volatility: 31.8% (threshold: 30%)",
      "metrics": {
        "fwd_vol": 0.3179561030898672,
        "threshold": 0.3
      }
    },
    {
      "code": "elevated_fwdvol",
      "scope": "interval",
      "severity": "WARN",
      "expiry_dt": null,
      "interval_from": "2026-06-09",
      "interval_to": "2026-06-16",
      "strike": null,
      "target_key": "06-09\u219206-16",
      "message_short": "Elevated fwd vol (31.0%)",
      "message_long": "Forward volatility: 31.0% (threshold: 30%)",
      "metrics": {
        "fwd_vol": 0.3101196290953484,
        "threshold": 0.3
      }
    },
    {
      "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 (39%)",
      "message_long": "Weighted-mid coverage: 38.9% (threshold: 50%)",
      "metrics": {
        "avg_coverage": 38.888888888888886,
        "threshold": 50.0
      }
    }
  ],
  "summary": {
    "total": 9,
    "fail_count": 0,
    "warn_count": 8,
    "info_count": 1
  },
  "derived": {
    "structure_summary": {
      "iv_7d": {
        "pct": 29.796251611380452,
        "pct_cal": 16.622260970801253,
        "actual_dte": 6,
        "expiry_date": "2026-05-26",
        "tau_eff": 0.00511819293429646,
        "tau_cal": 0.016445978793095797,
        "tau_ratio": 3.2132393218108413
      },
      "iv_30d": {
        "pct": 30.911960715279502,
        "pct_cal": 17.243848114244965,
        "actual_dte": 27,
        "expiry_date": "2026-06-16",
        "tau_eff": 0.02300910274770898,
        "tau_cal": 0.07394084532286993,
        "tau_ratio": 3.2135475308889316
      },
      "iv_90d": {
        "pct": null,
        "pct_cal": null,
        "actual_dte": null,
        "expiry_date": null,
        "tau_eff": null,
        "tau_cal": null,
        "tau_ratio": null
      },
      "front_slope_pct": 1.1157091038990485,
      "back_slope_pct": null,
      "max_fwd_vol_pct": 31.79561030898672,
      "max_fwd_vol_interval": {
        "from": "2026-06-02",
        "to": "2026-06-09"
      },
      "max_fwd_vol_dte_range": {
        "start_dte": 13,
        "end_dte": 20
      },
      "neg_interval_count": 0,
      "clock_primary": "variance_time",
      "clock_secondary": "calendar",
      "vt_vintage": "202604",
      "beta_on": 0.14112572167590545,
      "beta_we": 0.18483076859226696,
      "quote_context_dt": "2026-05-20T15:20:04.379639+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": "2026-06-02",
          "to": "2026-06-09",
          "start_dte": 13,
          "end_dte": 20,
          "forward_vol": 0.3179561030898672,
          "forward_variance": 0.10109608349209427
        },
        {
          "from": "2026-06-09",
          "to": "2026-06-16",
          "start_dte": 20,
          "end_dte": 27,
          "forward_vol": 0.3101196290953484,
          "forward_variance": 0.09617418435023647
        },
        {
          "from": "2026-05-26",
          "to": "2026-06-02",
          "start_dte": 6,
          "end_dte": 13,
          "forward_vol": 0.3082940999701243,
          "forward_variance": 0.09504525207638899
        },
        {
          "from": "2026-06-16",
          "to": "2026-06-30",
          "start_dte": 27,
          "end_dte": 41,
          "forward_vol": 0.29198782740718376,
          "forward_variance": 0.08525689135396733
        },
        {
          "from": "2026-06-30",
          "to": "2026-07-28",
          "start_dte": 41,
          "end_dte": 69,
          "forward_vol": 0.28617731966549315,
          "forward_variance": 0.08189745829092586
        }
      ],
      "lowest": [
        {
          "from": "2026-09-29",
          "to": "2026-12-29",
          "start_dte": 132,
          "end_dte": 223,
          "forward_vol": 0.20766864149726486,
          "forward_variance": 0.04312626466131951
        },
        {
          "from": "2026-07-28",
          "to": "2026-09-29",
          "start_dte": 69,
          "end_dte": 132,
          "forward_vol": 0.2524341155610707,
          "forward_variance": 0.0637229826991
        },
        {
          "from": "2026-06-30",
          "to": "2026-07-28",
          "start_dte": 41,
          "end_dte": 69,
          "forward_vol": 0.28617731966549315,
          "forward_variance": 0.08189745829092586
        },
        {
          "from": "2026-06-16",
          "to": "2026-06-30",
          "start_dte": 27,
          "end_dte": 41,
          "forward_vol": 0.29198782740718376,
          "forward_variance": 0.08525689135396733
        },
        {
          "from": "2026-05-26",
          "to": "2026-06-02",
          "start_dte": 6,
          "end_dte": 13,
          "forward_vol": 0.3082940999701243,
          "forward_variance": 0.09504525207638899
        }
      ],
      "neg_intervals": []
    },
    "forward_volatility_matrix": {
      "schema_version": "fwdvol_matrix_v2",
      "status": "available",
      "expiry_filter_policy_version": "usable_expiries_v1",
      "expiry_dates": [
        "2026-05-26",
        "2026-06-02",
        "2026-06-09",
        "2026-06-16",
        "2026-06-30",
        "2026-07-28",
        "2026-09-29",
        "2026-12-29"
      ],
      "dte_days": [
        6,
        13,
        20,
        27,
        41,
        69,
        132,
        223
      ],
      "matrix_fwdvol_pct": [
        [
          null,
          30.82940999701243,
          31.332800753782358,
          31.223807289187416,
          30.439076723500317,
          29.630001033872627,
          27.516072235935702,
          24.92374193562092
        ],
        [
          null,
          null,
          31.79561030898672,
          31.40623089789117,
          30.345345630326825,
          29.48537466205942,
          27.320593743301956,
          24.714215947560458
        ],
        [
          null,
          null,
          null,
          31.01196290953484,
          29.832327249837164,
          29.136338385485978,
          27.01318049953403,
          24.429085702073355
        ],
        [
          null,
          null,
          null,
          null,
          29.198782740718375,
          28.807408666885575,
          26.722176119075424,
          24.156511759922385
        ],
        [
          null,
          null,
          null,
          null,
          null,
          28.617731966549314,
          26.334411736128256,
          23.736038178334883
        ],
        [
          null,
          null,
          null,
          null,
          null,
          null,
          25.24341155610707,
          22.719084742371308
        ],
        [
          null,
          null,
          null,
          null,
          null,
          null,
          null,
          20.766864149726487
        ],
        [
          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": 23.07501844495856,
        "vmax": 31.380530347453085
      },
      "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": 314,
          "reject_reason": "insufficient_strikes",
          "accept_tier": null,
          "why": "insufficient_strikes"
        }
      ]
    },
    "build_metadata": {
      "git_commit": "d3cf4354",
      "build_timestamp": "2026-05-20T09:50:10.364252+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": "2026-05-20T09:50:10.364655+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": 8
      }
    },
    "ui_presets": {
      "schema_version": "ui_presets_v1",
      "generated_at_utc": "2026-05-20T09:50:10.368958+00:00",
      "asof_iso": "2026-05-20T15:20:04.379639+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": []
    }
  }
}