Can we restrict the high broadcast traffic from interface in Cisco ASR9k and 7600 routers? If so, what configuration we should apply?
You can't simply drop broadcast traffic. You need to locate the source(s) first, then you can filter appropriately - ideally close to the source. Better yet, identify the problem causing the broadcasts and fix it.
Of course, technically you can simply restrict broadcast frequency but that drops random frames and is highly prone to disturb your regular broadcast traffic, most prominently ARP.