The Polish striker has been thrown straight into the starting line-up and has made two appearances in a hectic month already.
"To be able to play for a great team with such good players is a real step up, and now it is all about how hard I work on the pitch," Rasiak told The Times prior to the Villa game.
"Playing against Liverpool was a lot different to the Championship, but I thought I did OK," he added.
Seven or eight away wins in the Premiership this season is Martin Jol’s top priority, he revealed at the weekend. And after three games on the road Spurs still remain unbeaten, but the best result was at Portsmouth back on the opening day of the season when optimism was high following a free-scoring pre-season – Martin Jol’s first as Tottenham Hotspur coach.
"If everyone can do the same as Jermain Defoe did last season (score 13 league goals) we will do just fine," Jol told The Sun newspaper.
"We have to score more goals and it’s about scoring at the right moment," said the Dutchman in The Times.
"We need 12 goals from Rasiak this season but if he gets 10 or 11 that’s fine, and that’s not for the money we would have paid for (Feyenoord’s) Dirk Kuyt," he added.
"If you look at Newcastle they buy Michael Owen and in doing that you buy 15 goals, maybe 20. And if he does not score at least 15 goals you would be disappointed. Also Albert Luque, when he gets fit, will score 12 goals for Newcastle.
"We have bought the players we have because we think they will be unbelievably good players in the future. It’s up to them to prove that," he said in The Mirror newspaper on the eve of his side’s Villa Park visit at the weekend.