In PA there is ability to create time breakdown report for a specific value, for example- one database that shows the database activity over time by providing performance metric value for each time breakdown (default 1 hour).
In PI this is possible only for the top level and then you get a time breakdown of the top dimension in the upper dimension. for example: standing on top batch under database sales will provide time breakdown report for the top batches in each time period.
This would the same report as the time breakdown, the only change is that the user select the dimension value itself e.g. database->Sales , instance etc.