# Amazon Q Business index metrics
<a name="qbusiness-metrics-index"></a>

The following table shows the [Index](concepts-terms.md#index) metrics that Amazon Q Business sends to CloudWatch in real time.


| Metric name | Unit | Description | 
| --- | --- | --- | 
|  `DocumentCount`  |  Count  |  The number of documents. This metric is published every 15 minutes. Valid dimensions: `ApplicationId`, `IndexId`  | 
|  `DocumentsIndexed`  |  Count  |  The number of documents that were indexed. Valid dimensions: `ApplicationId`, `IndexId`, `DataSourceId`  | 
|  `DocumentsFailedToIndex`  |  Count  |  The number of documents that failed to index. Valid dimensions: `ApplicationId`, `IndexId`, `DataSourceId`  | 
|  `DocumentsFailedToIndexDueToCDE`  |  Count  |  The number of documents that failed to index because of custom document enrichment. Valid dimensions: `ApplicationId`, `IndexId`, `DataSourceId`  | 
|  `ExtractedTextSize`  |  MB  |  Size of the extracted text Valid dimensions: `ApplicationId`, `IndexId`   | 
| MonthlyDataSyncDuration | Count |  Duration of data synchronization operations over a monthly period. Valid dimensions: `ApplicationId`, `IndexId`, `DataSourceId`  |