Review Issue Reports for a Kanban Board

Several kinds of reports are available in the Reports view for a Kanban board:

This Kind of Report	Displays ...
Burndown chart	The amount of unfinished work in issues or in an epic
Cumulative Flow chart	The total number of issues in each of the board's progress states, over time
Control chart	Information about issue’s progress state change event on the timeline
Issues report	Active and archived issues.
Epic report	An epic's complete, incomplete, and open stories
Velocity report	A velocity chart of completed issues

See Review Agile Reports and Charts.