I'm pretty sure it is not from the Saiyan or 
Namek Saga's.  I think it's either Android or 
Majin Boo Saga (probably Android).

You might want to post on Anime Beta in the 
Dragonball section for cels :

http://www.oftheoak.com

There seems to be a lot more Dragonball fans 
there who can help you out better than I can.