Starlight Rose Tracker is a counter for how many starlight roses you get, and it plays a "ding" sound whenever you pick one up. It doesn't play the ding for dust, but it adds one to the counter anyway. You can run a command to make it play the sound for dust as well. When you hit a milestone of roses (10, 20, 30, etc.), a randomized sound will play. You can easily disable this by typing "/slrt milestone toggle" into the chat.
To see all the commands you can use, run "/slrt help" in chat.