Latest Update so far,
car coolant is still the same in radiator and reservoir tank its a bit low I think (50-70ml) in radiator but the level is same in radiator I have drove car for more than 800 kms now.
Level in reservoir tank is also the same
PS I took my car to mechanic and he let car cooled down for 20-30 mins after which he opened the cap and level was fine. So I noticed if i let the car cooled over night its level drops a bit in radiator but as soon as engine gets warm its level get back to normal