{
  "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": "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": "2026-07-28",
      "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": "2026-07-28",
      "interval_to": "2026-09-29",
      "strike": null,
      "target_key": "07-28\u219209-29",
      "message_short": "LOW confidence",
      "message_long": "Event confidence: LOW (baseline not robust)",
      "metrics": {
        "confidence": "LOW"
      }
    },
    {
      "code": "baseline_thin",
      "scope": "interval",
      "severity": "INFO",
      "expiry_dt": null,
      "interval_from": "2026-09-29",
      "interval_to": "2026-12-29",
      "strike": null,
      "target_key": "09-29\u219212-29",
      "message_short": "Thin baseline",
      "message_long": "Baseline quality: THIN (few neighbors: 1)",
      "metrics": {
        "baseline_n": 1
      }
    },
    {
      "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 (30.4%)",
      "message_long": "Forward volatility: 30.4% (threshold: 30%)",
      "metrics": {
        "fwd_vol": 0.30378444777167213,
        "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 (30.6%)",
      "message_long": "Forward volatility: 30.6% (threshold: 30%)",
      "metrics": {
        "fwd_vol": 0.3062750427068446,
        "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 (33%)",
      "message_long": "Weighted-mid coverage: 32.9% (threshold: 50%)",
      "metrics": {
        "avg_coverage": 32.85714285714286,
        "threshold": 50.0
      }
    }
  ],
  "summary": {
    "total": 11,
    "fail_count": 0,
    "warn_count": 9,
    "info_count": 2
  },
  "derived": {
    "structure_summary": {
      "iv_7d": {
        "pct": 28.391142338880886,
        "pct_cal": 16.3804950832855,
        "actual_dte": 5,
        "expiry_date": "2026-05-26",
        "tau_eff": 0.004784689242430585,
        "tau_cal": 0.01437359563718407,
        "tau_ratio": 3.0040813329566194
      },
      "iv_30d": {
        "pct": 29.644665298240497,
        "pct_cal": 16.66658905036395,
        "actual_dte": 33,
        "expiry_date": "2026-06-23",
        "tau_eff": 0.028774063611184057,
        "tau_cal": 0.0910334176768829,
        "tau_ratio": 3.163731717111362
      },
      "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": 1.2535229593596098,
      "back_slope_pct": null,
      "max_fwd_vol_pct": 30.627504270684458,
      "max_fwd_vol_interval": {
        "from": "2026-06-02",
        "to": "2026-06-09"
      },
      "max_fwd_vol_dte_range": {
        "start_dte": 12,
        "end_dte": 19
      },
      "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": "2026-05-21T09:30:03.818320+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": 12,
          "end_dte": 19,
          "forward_vol": 0.3062750427068446,
          "forward_variance": 0.09380440178507946
        },
        {
          "from": "2026-05-26",
          "to": "2026-06-02",
          "start_dte": 5,
          "end_dte": 12,
          "forward_vol": 0.30378444777167213,
          "forward_variance": 0.09228499070793979
        },
        {
          "from": "2026-06-09",
          "to": "2026-06-16",
          "start_dte": 19,
          "end_dte": 26,
          "forward_vol": 0.29577195037534876,
          "forward_variance": 0.08748104662883775
        },
        {
          "from": "2026-06-16",
          "to": "2026-06-23",
          "start_dte": 26,
          "end_dte": 33,
          "forward_vol": 0.2897444753027955,
          "forward_variance": 0.08395186096849229
        },
        {
          "from": "2026-06-23",
          "to": "2026-06-30",
          "start_dte": 33,
          "end_dte": 40,
          "forward_vol": 0.28152671503320165,
          "forward_variance": 0.07925729127738551
        }
      ],
      "lowest": [
        {
          "from": "2026-09-29",
          "to": "2026-12-29",
          "start_dte": 131,
          "end_dte": 222,
          "forward_vol": 0.21265656344457534,
          "forward_variance": 0.045222813976056694
        },
        {
          "from": "2026-07-28",
          "to": "2026-09-29",
          "start_dte": 68,
          "end_dte": 131,
          "forward_vol": 0.2546504534583082,
          "forward_variance": 0.06484685344652201
        },
        {
          "from": "2026-06-30",
          "to": "2026-07-28",
          "start_dte": 40,
          "end_dte": 68,
          "forward_vol": 0.2805101446006314,
          "forward_variance": 0.07868594122386713
        },
        {
          "from": "2026-06-23",
          "to": "2026-06-30",
          "start_dte": 33,
          "end_dte": 40,
          "forward_vol": 0.28152671503320165,
          "forward_variance": 0.07925729127738551
        },
        {
          "from": "2026-06-16",
          "to": "2026-06-23",
          "start_dte": 26,
          "end_dte": 33,
          "forward_vol": 0.2897444753027955,
          "forward_variance": 0.08395186096849229
        }
      ],
      "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",
        "2026-06-23",
        "2026-06-30",
        "2026-07-28",
        "2026-09-29",
        "2026-12-29"
      ],
      "dte_days": [
        5,
        12,
        19,
        26,
        33,
        40,
        68,
        131,
        222
      ],
      "matrix_fwdvol_pct": [
        [
          null,
          30.378444777167214,
          30.507499789146923,
          30.193607561215284,
          29.888393029637754,
          29.56746043435367,
          28.89213850701738,
          27.226172823676315,
          24.913639589797675
        ],
        [
          null,
          null,
          30.627504270684458,
          30.1069301336019,
          29.73422883829395,
          29.37095399221863,
          28.711831818897025,
          27.040630146280243,
          24.721346762199506
        ],
        [
          null,
          null,
          null,
          29.577195037534874,
          29.277372457012774,
          28.927955091804407,
          28.424290521055838,
          26.798053568209895,
          24.48873890552135
        ],
        [
          null,
          null,
          null,
          null,
          28.97444753027955,
          28.583816844912736,
          28.224865597809977,
          26.600317094320374,
          24.284058262059688
        ],
        [
          null,
          null,
          null,
          null,
          null,
          28.152671503320164,
          28.070037241575964,
          26.420490911893523,
          24.08961831047494
        ],
        [
          null,
          null,
          null,
          null,
          null,
          null,
          28.05101446006314,
          26.292904287506058,
          23.931155708515135
        ],
        [
          null,
          null,
          null,
          null,
          null,
          null,
          null,
          25.465045345830823,
          23.089243895887794
        ],
        [
          null,
          null,
          null,
          null,
          null,
          null,
          null,
          null,
          21.265656344457533
        ],
        [
          null,
          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,
          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": 23.7206777553583,
        "vmax": 30.41070853016214
      },
      "usable_count": 9,
      "excluded": []
    },
    "expiry_quality_summary": {
      "schema_version": "expiry_quality_summary_v1",
      "filter_policy_version": "usable_expiries_v1",
      "total_count": 10,
      "usable_count": 9,
      "excluded": [
        {
          "expiry_date": "2027-03-30",
          "dte_days": 313,
          "reject_reason": "insufficient_strikes",
          "accept_tier": null,
          "why": "insufficient_strikes"
        }
      ]
    },
    "build_metadata": {
      "git_commit": "49b466d6",
      "build_timestamp": "2026-05-21T04:00:08.705450+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": "2026-05-21T04:00:08.706707+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": 9,
        "excluded_expiries": 1,
        "neg_cells": 0,
        "issues_fail": 0,
        "issues_warn": 9
      }
    },
    "ui_presets": {
      "schema_version": "ui_presets_v1",
      "generated_at_utc": "2026-05-21T04:00:08.709759+00:00",
      "asof_iso": "2026-05-21T09:30:03.818320+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": []
    }
  }
}