{
  "schema_version": "fwdvar_diagnostics_v4",
  "issues": [
    {
      "code": "rejected",
      "scope": "expiry",
      "severity": "INFO",
      "expiry_dt": "2026-09-01",
      "interval_from": null,
      "interval_to": null,
      "strike": null,
      "target_key": "2026-09-01",
      "message_short": "Rejected: iv_convergence",
      "message_long": "Expiry rejected: iv_convergence",
      "metrics": {
        "reject_reason": "iv_convergence"
      }
    },
    {
      "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": "low_tier",
      "scope": "expiry",
      "severity": "WARN",
      "expiry_dt": "2027-03-30",
      "interval_from": null,
      "interval_to": null,
      "strike": null,
      "target_key": "2027-03-30",
      "message_short": "LOW tier (direct straddle)",
      "message_long": "Accept tier: LOW (DIRECT_STRADDLE_ONLY path)",
      "metrics": {}
    },
    {
      "code": "rejected",
      "scope": "expiry",
      "severity": "INFO",
      "expiry_dt": "2027-06-29",
      "interval_from": null,
      "interval_to": null,
      "strike": null,
      "target_key": "2027-06-29",
      "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": "2026-08-18",
      "interval_to": "2026-08-25",
      "strike": null,
      "target_key": "08-18\u219208-25",
      "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": "2026-08-25",
      "interval_to": "2026-09-29",
      "strike": null,
      "target_key": "08-25\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": "2026-12-29",
      "interval_to": "2027-03-30",
      "strike": null,
      "target_key": "12-29\u219203-30",
      "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": "2026-12-29",
      "interval_to": "2027-03-30",
      "strike": null,
      "target_key": "12-29\u219203-30",
      "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 (22%)",
      "message_long": "Weighted-mid coverage: 22.0% (threshold: 50%)",
      "metrics": {
        "avg_coverage": 22.000000000000004,
        "threshold": 50.0
      }
    }
  ],
  "summary": {
    "total": 9,
    "fail_count": 0,
    "warn_count": 6,
    "info_count": 3
  },
  "derived": {
    "structure_summary": {
      "iv_7d": {
        "pct": 21.39694221746116,
        "pct_cal": 12.604193851879868,
        "actual_dte": 6,
        "expiry_date": "2026-07-28",
        "tau_eff": 0.005937372321318513,
        "tau_cal": 0.01711069158456283,
        "tau_ratio": 2.8818626588610257
      },
      "iv_30d": {
        "pct": 21.759881942529287,
        "pct_cal": 12.540117969318318,
        "actual_dte": 27,
        "expiry_date": "2026-08-18",
        "tau_eff": 0.024777720987010324,
        "tau_cal": 0.07460555811433697,
        "tau_ratio": 3.010993551563875
      },
      "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": 0.36293972506812877,
      "back_slope_pct": null,
      "max_fwd_vol_pct": 22.249765163335468,
      "max_fwd_vol_interval": {
        "from": "2026-07-28",
        "to": "2026-08-04"
      },
      "max_fwd_vol_dte_range": {
        "start_dte": 6,
        "end_dte": 13
      },
      "neg_interval_count": 0,
      "clock_primary": "variance_time",
      "clock_secondary": "calendar",
      "vt_vintage": "202606",
      "beta_on": 0.15477964854366905,
      "beta_we": 0.1942884133079315,
      "quote_context_dt": "2026-07-22T09:30:27.639251+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": "2026-07-28",
          "to": "2026-08-04",
          "start_dte": 6,
          "end_dte": 13,
          "forward_vol": 0.2224976516333547,
          "forward_variance": 0.049505204982357665
        },
        {
          "from": "2026-08-04",
          "to": "2026-08-11",
          "start_dte": 13,
          "end_dte": 20,
          "forward_vol": 0.2181269577340997,
          "forward_variance": 0.047579369690333724
        },
        {
          "from": "2026-08-11",
          "to": "2026-08-18",
          "start_dte": 20,
          "end_dte": 27,
          "forward_vol": 0.21550872911796318,
          "forward_variance": 0.04644401232603963
        },
        {
          "from": "2026-08-25",
          "to": "2026-09-29",
          "start_dte": 34,
          "end_dte": 69,
          "forward_vol": 0.21234135323486214,
          "forward_variance": 0.045088850293612495
        },
        {
          "from": "2026-08-18",
          "to": "2026-08-25",
          "start_dte": 27,
          "end_dte": 34,
          "forward_vol": 0.20209721724686613,
          "forward_variance": 0.04084328521892701
        }
      ],
      "lowest": [
        {
          "from": "2026-12-29",
          "to": "2027-03-30",
          "start_dte": 160,
          "end_dte": 251,
          "forward_vol": 0.1932767544142293,
          "forward_variance": 0.037355903796898314
        },
        {
          "from": "2026-09-29",
          "to": "2026-12-29",
          "start_dte": 69,
          "end_dte": 160,
          "forward_vol": 0.20099522979095738,
          "forward_variance": 0.04039908239871976
        },
        {
          "from": "2026-08-18",
          "to": "2026-08-25",
          "start_dte": 27,
          "end_dte": 34,
          "forward_vol": 0.20209721724686613,
          "forward_variance": 0.04084328521892701
        },
        {
          "from": "2026-08-25",
          "to": "2026-09-29",
          "start_dte": 34,
          "end_dte": 69,
          "forward_vol": 0.21234135323486214,
          "forward_variance": 0.045088850293612495
        },
        {
          "from": "2026-08-11",
          "to": "2026-08-18",
          "start_dte": 20,
          "end_dte": 27,
          "forward_vol": 0.21550872911796318,
          "forward_variance": 0.04644401232603963
        }
      ],
      "neg_intervals": []
    },
    "forward_volatility_matrix": {
      "schema_version": "fwdvol_matrix_v2",
      "status": "available",
      "expiry_filter_policy_version": "usable_expiries_v1",
      "expiry_dates": [
        "2026-07-28",
        "2026-08-04",
        "2026-08-11",
        "2026-08-18",
        "2026-08-25",
        "2026-09-29",
        "2026-12-29",
        "2027-03-30"
      ],
      "dte_days": [
        6,
        13,
        20,
        27,
        34,
        69,
        160,
        251
      ],
      "matrix_fwdvol_pct": [
        [
          null,
          22.249765163335468,
          22.032314298853333,
          21.873011299981158,
          21.469272939346247,
          21.33988428565147,
          20.619808059441713,
          20.144662990693
        ],
        [
          null,
          null,
          21.81269577340997,
          21.68217955100148,
          21.202725236417162,
          21.222244853242554,
          20.537569136108832,
          20.078716473047812
        ],
        [
          null,
          null,
          null,
          21.55087291179632,
          20.891062388610905,
          21.135570763275584,
          20.470533900278326,
          20.023228856884927
        ],
        [
          null,
          null,
          null,
          null,
          20.209721724686613,
          21.064624575507864,
          20.41097350248714,
          19.97304894014816
        ],
        [
          null,
          null,
          null,
          null,
          null,
          21.234135323486214,
          20.422320165432104,
          19.965278447099635
        ],
        [
          null,
          null,
          null,
          null,
          null,
          null,
          20.099522979095738,
          19.713222260762677
        ],
        [
          null,
          null,
          null,
          null,
          null,
          null,
          null,
          19.327675441422933
        ],
        [
          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": 19.801441925980612,
        "vmax": 21.97655824924807
      },
      "usable_count": 8,
      "excluded": []
    },
    "expiry_quality_summary": {
      "schema_version": "expiry_quality_summary_v1",
      "filter_policy_version": "usable_expiries_v1",
      "total_count": 10,
      "usable_count": 8,
      "excluded": [
        {
          "expiry_date": "2026-09-01",
          "dte_days": 41,
          "reject_reason": "iv_convergence",
          "accept_tier": null,
          "why": "iv_convergence"
        },
        {
          "expiry_date": "2027-06-29",
          "dte_days": 342,
          "reject_reason": "insufficient_strikes",
          "accept_tier": null,
          "why": "insufficient_strikes"
        }
      ]
    },
    "build_metadata": {
      "git_commit": "632f2503d",
      "build_timestamp": "2026-07-22T04:00:41.692203+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": "2026-07-22T04:00:41.694231+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": 2,
        "neg_cells": 0,
        "issues_fail": 0,
        "issues_warn": 6
      }
    },
    "ui_presets": {
      "schema_version": "ui_presets_v1",
      "generated_at_utc": "2026-07-22T04:00:41.703561+00:00",
      "asof_iso": "2026-07-22T09:30:27.639251+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": []
    }
  }
}