Chapter 13 Logging and Reporting : Logging and reporting overview : Reports : What are FortiOS reports?
  
What are FortiOS reports?
FortiOS reports are configured from logs stored on the FortiGate unit’s hard drive. These reports, generated by the FortiGate unit itself, provide a central location for both configuring and generating reports. A default FortiOS report, called the FortiGate Security Feature Daily Activity Report, is available for you to modify to your requirements. The default report provides a way to quickly and easily set up your own report from within the web‑based manager. The default FortiOS report is a report that compiles security feature activity from various security-related logs, such as virus and attack logs.
FortiOS reports consist of multiple parts, regardless of whether its the default FortiOS report or a report that you have configured from scratch, and these parts are configured separately and added to the layout. These parts of a FortiOS report are:
charts (including datasets within the charts themselves)
themes (including styles which are within the themes themselves)
images
layout