Centova will provide the data on what was played when- it would give you listen logs - does not take much data matching to get the answers your after.
Not sure why you would not know which DJ's were on air at which times anyway.
Centova can only compile the data on the info received via the steam - so it very import that the mp3 tags are correct and also the DJ data is entered and correct.
Centova will keep track of who was on line and when, if the stream is data encoded - from experience a lot of DJ's either do not set this or even know how to or why.
Also in Centova, does it provide a DJ History on how long they encoded and what songs they played on the air and what time?
We do get a playlist report but it does not indicate which DJ played the song.
We need a comprehensive report including how many listeners were listening to The DJ's show and how many disconnected while they were on the air.