Post Power On Screen Glitch

Just got a brand new 32GB Nexus yesterday, fully upgraded to the latest software. However I've noticed when powering up, as the 'Google' logo appears on the screen it also throws up about 4 quite wide pixelated lines for about half a second.

Looks to be something of a graphical glitch as the logo appears. Just wondering if anybody has noticed this on their device, if it was returned as faulty or if it's just one of those things?