The Cobblers beat in-form Fleetwood 3-1 a Sixfields to make it six wins out of seven at home. A couple of first half goals from Jake Robinson and one from Clive Platt shortly after the restart put Cobblers on the way to three more points before Jamie Allen grabbed a stoppage-time consolation.
Boothroyd said: "Our home form is the second best in the league but our away form in 22nd, so obviously we need to address that if we are to get into the play-offs.
"But we've got a very good record here and we were worthy winners. We've come a long way in a short space of time and now we need to build on it.
"It was a benchmark game for us to see how far we've come against a top seven team. They beat us last time we played them but this was a very good performance and we thoroughly deserved the three points.
"We adapted to the pitch and the conditions well and in the end we were just too strong for them. We were very professional in everything we did and made some good decisions in position.
"We'll always have goals in us but the only disappointment was not keeping a clean sheet. You have to get into the habit of doing that is you want to get into the top three. If you do that then you tend to win games that you might have ended up drawing."