Certik Data collection for monitoring

What platforms does Certik collect their active monitoring data from? Is it only pancake swap or does it include centralize and decentralize exchanges?
Especially for total users and transactions? Can someone explain what does it mean to only tract one contract? Is the contract the token provides to Certik so it can monitor the blockchain transactions? And does those transactions account for all exchanges across the board rather its decentralized or centralized exchanges since it tracks blockchain data?

Thank you.