TBT Test Before Trade Strategy backtesting Launch backtester

Research / Data Quality

Store once. Validate before research.

Private NSE cash-market source bars are standardised in Asia/Kolkata. TBT stores 1-minute and daily bars; all higher timeframes are generated consistently on demand.

1-minute + daily source policyDerived intraday and weekly bars are not duplicated
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Stored dataset

Data Quality Center

NSE cash stocks
Historical candles
Earliest date
Latest date
Complete / good
Warnings
Errors / critical
Duplicates detected
Missing source minutes
Invalid OHLC records
Database storage
Storage and score policy

Storage: one-minute and daily source candles are persisted privately. 2/3/5/10/15/30/60-minute and weekly bars are generated on demand using first open, maximum high, minimum low, last close and summed volume—never across NSE trading days.

Score: valid OHLC, timestamp continuity/coverage, conflicts and serious corruption determine the 0–100 score. Zero-volume bars are flagged for review but are not automatically treated as unusable market data.

Corporate actions: stored prices are marked UNKNOWN unless an authorised adjustment source marks them RAW or ADJUSTED.

Full instrument-master audit

NSE Cash · one-year 1-minute availability

Reuses stored candles first, retrieves only missing or incomplete dates, and checkpoints every stock. No hypothesis result or locked-test partition is accessed.

No full-universe audit has been started.

FULL_1Y requires at least 220 genuine trading days, 90% minute availability, and an audit quality score of at least 85.

Post-H15 data accumulation

H16 Fresh Data Readiness

Only 1-minute candles strictly after 4 Sep 2026 are eligible. The frozen H15 Discovery, Validation and reserved Final Test periods are never read by this workflow.

Loading H16 fresh-data readiness…

H16 remains blocked until its separately versioned post-H15 dataset meets the existing Stage-2 sample safeguards.

Automatic collection is not armed.

Import / Update Historical Data

Controlled selected-stock import with rate-aware intraday chunks, safe resume and no routine re-fetch of stored dates.

One symbol per line or comma-separated. Maximum 20 selected stocks per job. Indices, F&O contracts and ETFs are excluded.
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No import is running.

The importer stores only validated source candles. Existing matching candles are skipped; conflicting data is retained as an audit record.

Checks applied to every source candle

Problems are recorded; TBT never forward-fills candles or silently overwrites conflicting OHLCV.

  • OHLC validityPositive prices; high/low must contain open and close.
  • Timestamp integrityAsia/Kolkata conversion, ordering, duplicates and regular NSE session bounds.
  • ContinuityExpected versus observed one-minute bars for covered trading dates.
  • Conflict auditIncoming values that disagree with stored candles are retained as ERROR audit records; they are not reported as invalid OHLC.
  • Research safetyCritical quality records are marked unsafe for future research.

Symbol-level inspection

Stored NSE Cash Instruments

SymbolData fromData toTrading days1m candlesMissingDuplicatesInvalid OHLCZero volumeQuality scoreStatus
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