The Latics claimed a 2-1 win over Arsenal on Monday to move into 16th spot in the Premier League, five points clear of the relegation zone, and Caldwell believes that the club can survive.
"For a number of weeks now we've been playing well and getting reward for that. At the start of the season we had a difficult time and we had to stick together and really stay strong as a group. We've done that and we've come out stronger," the 30-year-old told Sky Sports News.
"There's a long way to go and it's still going to be a big battle down at the bottom. We've given ourselves a chance but we've got to regroup and go again."
Caldwell has made 32 appearances for the club this season.