Cloak room/ luggage room is at just left of PF 14
You have to scan your luggage and stick the Railway sticker on it
Scanner Machine is just in front of it approximate in walking distance (10 step).
with your luggage you have to show your reservation ticket, in which station should be mentioned as CST.
keep...
more... lock your luggage (mandatory).
no carton boxes, parcel, hand bags are allowed.