The Aircraft in question passed overhead at 0145 this morning (Monday 3rd). I was probably just a combination of being woken and the general level of quietness at this hour of the morning, but it seemed to be the loudest aircraft I'd ever heard at home (well, since Concorde, and that never flew over my home).
You posted on June 2nd so i take it you mean 0145 June 2nd
It was the late VS350 to Mumbai - an A343.
Sometimes the rain makes them sound louder and the 2nd June was a wet one.