Madueke cut short his summer break last week to train at London Colney as the squad completed their preseason tour of Asia.
The signing from Chelsea featured for the first time at Emirates stadium on Wednesday.
Arteta told arsenal.com afterwards: "Yeah, without asking about it (Madueke cut short his break). He showed a lot of desire to come and join us from day one and I think what he's done is remarkable.
"I think it shows how much he wants it, how willing he is to put everything that he can to make this work. I think the reception he got from our supporters was brilliant as well. So great, again, another one through the door that has the first experience with us and on Saturday he’ll go again."
On Madueke's role, he added, "Both sides. I think Noni, when you ask him, he's very comfortable playing right and left so if we want to have inverted footed players, we can do that.
"He's a real threat, I wouldn’t want to play against him and we want to find something else and playing with natural-footed players, he's going to give us that solution. Today you've already seen a couple of balls that he put in the box, the pace and the quality he can deliver. So, great option."