# Data health and honesty

Source: https://tactiq.pro/docs/data-health · Trust · updated 2026-10-31

Every data stream shows Live, Delayed, Stale or Disconnected, and Tactiq marks what is estimated, missing or late, so old data never looks current.

Every data stream has a state:

- **Live:** data arrives on time.
- **Delayed:** data is late.
- **Stale:** data is too old to use.
- **Disconnected:** no connection.

Tactiq never shows old data as current. A grey candle means minutes are missing from that bar.

### Measured, estimated and reasoned

- **Measured:** says how many cases it used and how it compares with random times.
- **Estimated:** comes from a model, such as the liquidation heatmap. It is labelled.
- **Reasoned:** comes from market mechanics, not from a test. It says "reasoned".

### How Tactiq avoids flattering itself

- **Closed bars only.** A reading uses data up to the close. Recomputing 17,472 past 15-minute Flag bars (January to June 2024) from different starting points changed none.
- **A random-time baseline** for every reading, with a stricter bar for each extra test.
- **Costs inside every R.**
- **No replay of the analyst.** Forward tracking only.
- **An audit gate** of automated checks and fresh-eyes reviews before any release.

### Limits

- Binance does not publish the history of the order book or of liquidations. Tactiq collects them live, so they start on the day Tactiq started watching.
- Liquidations are a sample: at most one per second.
- The footprint needs the trades of a bar. After a restart, Tactiq loads the last 24 hours again.
- Older bars lose inputs that exist only for recent bars, such as the footprint and big trades (about a day) and the book (now only).