CBS' "Supergirl" received an unexpected positive feedback from viewers as this fall's line of debuting TV shows and new seasons come in full swing.

A report from Cinema Blend dubbed the show's pilot episode as the #1 series premiere for this fall as it catered more than 12 million viewers in just one night based on the numbers gathered by Nielsen, a U.S.-based consumer information provider.

According to Nielsen's data as cited in the Cinema Blend report, a large portion of this hefty viewership average came from the show's young adult audience.

Aside from that, a report from Deadline revealed the results from Live+3 that pegged the viewership in the adult category at a 4.1 rating, trailing behind the NBS rookie "Blindspot" which earned 4.5 in that category which is comprised of viewers aged 18 to 49.

However, that is not the impressive part for this particular CBS TV series as a recent report from the same outlet deem that an understatement.

This is because "Supergirl" also holds the number 1 spot in Live+3 viewership which later paved the way for the show to garner a total number of viewers summing up to over 16 million worldwide.

When added to the number of DVR viewers released three days from the debut of the pilot episode which is roughly about 3 million added viewers which are quite "impressive," per Cinema Blend, considering the leakage of the pilot episode in the previous months.

"As a hotly anticipated new series, many fans likely opted to get in on the action early, forgoing the decision to watch the series when it actually premiered on CBS," the outlet explained.

The outlet is referring to the leaked version of the episode which have already been downloaded more than 120,000 times.

While some may speculate that the show's high ratings may be because of its quality, Cinema Blend believes that it is more likely because of the intricately woven lineup of CBS shows which put "Supergirl" which was aired after "The Big Bang Theory"- strategically away from another DC-based show "Gotham."

"Supergirl," as the title suggests, is a "Superman" spinoff that features Clark Kent's Kryptonian cousin, Kara Zor-El, also known as Kara Danvers, portrayed by "Glee" star Melissa Benoist.

It begins with the story of how Kara earned the monicker by embracing her superhuman powers and accepting the challenge of becoming the hero she was meant to become.

The show airs in CBS every Monday at 8/7c.