> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nectarclimate.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Data Quality

> Monitor data issues and track completeness across your utility portfolio.

<Tip>
  Need help in this area? See [Data Quality FAQ](/platform/data-quality/faq).
</Tip>

Nectar's Data Quality module gives you visibility into problems and gaps in your utility data. Instead of discovering issues downstream — in a report or an export — you can catch and resolve them at the source.

<Tip>
  Need issue triage or completeness troubleshooting? See
  [Data Quality FAQ](/platform/data-quality/faq).
</Tip>

The module is organized into three tools:

<CardGroup cols={2}>
  <Card title="Issues" icon="triangle-exclamation" href="/platform/data-quality/issues">
    Triage and resolve bill data quality issues with guided resolution steps.
  </Card>

  <Card title="Completeness" icon="chart-pie" href="/platform/data-quality/completeness">
    Visualize coverage gaps and monitor whether every site has the data you expect.
  </Card>

  <Card title="Anomalies" icon="chart-line" href="/platform/data-quality/anomalies">
    Detect cost spikes, usage spikes, late fees, and demand charge anomalies across your portfolio.
  </Card>
</CardGroup>

## How it works

Data quality checks run automatically as part of Nectar's data pipeline:

| Check type              | Trigger                      | Examples                                                                                       |
| ----------------------- | ---------------------------- | ---------------------------------------------------------------------------------------------- |
| **Connection issues**   | Each weekly connection check | Incorrect password, site down, MFA required                                                    |
| **Data quality issues** | Bill and meter processing    | Missing usage data, duplicate bill, unmatched account, illegible scan, inferred dates or units |
| **Completeness gaps**   | Daily roll-up                | Missing billing periods, sites with no active connections                                      |

<Note>
  Data quality features are actively evolving. New issue types and completeness views are added
  regularly.
</Note>

## Related pages

* [Troubleshooting connections](/platform/data-input/troubleshooting) — resolve connection errors that cause data quality issues
* [Sites](/platform/sites/overview) — view per-site completeness from the site dashboard
* [Methodology](/platform/methodology/overview) — understand how Nectar processes and calendarizes bill data

## FAQ

<AccordionGroup>
  <Accordion title="What types of issues does Nectar detect?">
    Nectar detects two broad categories of issues:

    * **Connection issues** — problems that prevent bill collection, such as incorrect passwords, expired credentials, MFA challenges, or provider site outages.
    * **Data quality issues** — anomalies found during bill and meter processing, such as missing usage data, duplicate bills, unmatched accounts, illegible scans, or inferred dates and units. See [Issues](/platform/data-quality/issues) for the full list of issue types.
  </Accordion>

  <Accordion title="How often are issues updated?">
    **Connection issues** are updated each time a connection is checked, which happens on a weekly schedule. **Data quality issues** are created or resolved whenever a bill or meter is processed or reprocessed.
  </Accordion>
</AccordionGroup>