Hello all, i received my new plasma tv which is Panasonic TH-P50U20K (rm3999) today and can't help but noticed that there are noise in picture quality especially on those bright area (light etc). Very hard to explain but i hope u guys get what i am trying to tell

I dont know if its normal since it's not me who bought that tv, so this is the first time i'm checking it out with my own eyes. My sis bought it during midvalley road show (she doesn't care much about picture quality but i do).

Is it normal?