I agree with your statement. But let me correct you. Its Pf 1 of Naihati Jn, pic taken from Halisahar side overbridge. Pf 1 is strictly for Naihati locals only. As the extended line beyond pf 1 goes to side lines. So, correct your train tag & make it Naihati-Sealdah Local. Also, this pic is very common in internet. You may mention the source also.