wp-cron still running even though DISABLE_WP_CRON is true

I have created a cron job to run wp-cron.php for me but I am seeing in my FPM logs where it’s still running. From what I understand, is that with the cron job it wouldn’t be hitting FPM to create any logs.

Is there a way to trace this and figure out whats running the file?

If what you are seeing are hits to /wp-cron.php, there is nothing really that prevents a plugin or malicious bots from making a request to that file, with or without DISABLE_WP_CRON set to true, but with it set to TRUE the actual cron process should be killed.