> For the complete documentation index, see [llms.txt](https://docs.flopsar.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.flopsar.com/7/user-guide/observing-and-diagnosing/data-analysis.md).

# Data Analysis

Data Analysis (Multidimensional Analysis) aggregates many recorded invocations so you can tell a one-off spike from a systemic regression. Open it from **Analytics → Data Analysis**. You must set a **date range** and an **application**. Optional conditions match the [Data Browser](/7/user-guide/observing-and-diagnosing/data-browser.md) form. You can also apply a saved [chart](/7/user-guide/observing-and-diagnosing/dashboards.md) when every rule on that chart selects the same application.

{% hint style="info" %}
**Screenshot placeholder:** Workstation → Analytics → Data Analysis. Percentile curve, heatmap, and Exceptions panel after a search; AI Analysis in the toolbar.
{% endhint %}

The view has three areas. After a search, **AI Analysis** (if enabled) opens the [AI Assistant](/7/user-guide/observing-and-diagnosing/ai-assistant.md) grounded in this query.

## Duration distribution

* A percentile curve of method duration with bars for invocation count in each percentile band. The count in a band is the difference between consecutive percentiles (for example P50 minus P25), not a standard histogram bucket.
* A table of exact percentile values, durations, and counts.
* Percentiles over time, and invocation count over time.

## 2D analysis

A heatmap of a selected data type against duration (vertical) and time (horizontal). Cells aggregate the range they cover:

* **Count** — invocations in the cell
* **Off-CPU** — share of invocations whose off-CPU time is largest
* **Exceptions** — methods that threw

A percentile control limits the chart to invocations below that percentile of duration.

## Exceptions

* **Top root exceptions** — the most frequent originating exceptions.
* Selecting one fills **Top method exception** — methods that throw it.
* The stack-trace control opens successive traces for that exception.

From here you typically open an individual call in the [Method Execution Tree](/7/user-guide/observing-and-diagnosing/method-execution-tree.md).