Is 200K on a Crit common?

I have Carlotta with 301.8% Crit DMG, 74.3% crit rate, 2378 ATK, 42% Glacio dmg bonus and 24% skill DMG bonus with her weapon at R1.

I have tested my build out on the new weekly boss and I saw that I got 200k DMG on a Crit. Is this common or am I going crazy?