Data checks
Every trading day, after NSE publishes its end-of-day files, Strota compares the figures on its data pages with the official file for the same date. The results are published here, failures included.
Results
| Check | Result | Compared with | Detail |
|---|---|---|---|
| FII/DII flows | Matched | NSE fiidiiTradeReact | 2026-10-30: FII +3,598.54 cr, DII -817.51 cr |
| India VIX | Matched | NSE index close file | 2026-10-30: close 15.3 |
| Nifty P/E, P/B, yield | Matched | NSE index close file | 2026-10-30: P/E 19.3, P/B 2.83 |
| Index level | Matched | NSE index close file | Nifty 50 close 23,053.10 shown |
| Support and resistance | Matched | NSE index close file (previous session OHLC) | classic pivots from the 2026-10-30 OHLC |
| F&O lot sizes | Matched | NSE fo_mktlots.csv | all 224 underlyings match fo_mktlots |
| PCR and max pain | Matched | NSE F&O bhavcopy | 224 underlyings, 2026-10-30 |
| Market breadth | Matched | NSE CM bhavcopy + Nifty 500 list | 2026-10-30: 114 up, 382 down; DMA columns vary |
| Dividend-yield closes | Matched | NSE CM bhavcopy | top 40 closes match the 2026-10-30 bhavcopy |
| Results calendar | Matched | NSE event calendar | 849 meetings; 1 newer on NSE, 0 since dropped |
| Quarterly results | Mismatch | NSE integrated-filing XBRL | 1 of 15: CONCOR: revenue 2379 / profit [353, 354] not in row ['2,373', '—', '347'] |
| Corporate actions | Matched | NSE corporate actions | NSE's 20 current actions present |
| Market holidays | Matched | NSE holiday master | 20 holidays in 2026 |
| Repo rate | Matched | RBI current-rates panel | 5.50% matches RBI |
| Freshness | Matched | last NSE session | end-of-day data reaches 2026-10-30 |
How the checks work
Each check reads what a visitor gets from the page (its CSV download or the page itself) and compares it with the source: NSE's index close file, its equity and F&O bhavcopies, its lot-size file, FII/DII figures, event calendar, corporate actions, holiday list and companies' XBRL results filings, and RBI's current-rates panel. Values must match exactly, or to the rounding shown on the page. A source that can't be reached is reported as "not run", never as a match.
The calculators are checked separately: a browser test runs every calculator on the live site against reference values from the official rules and figures, nightly and whenever a calculator changes.
When a check fails, the page is fixed at the source and the correction noted. To report a figure yourself, see contact. Field definitions are on the methodology page; who runs Strota is on about.