No, Zeitgeist Zero is not a goth band, because they play EBM/Industrial Rock, while goth music consists of Gothic Rock and its derived genres, like Deathrock, Darkwave, Ethereal Wave, and Coldwave.

However, their music does show some goth influences and could be considered adjacent to the goth scene.

If you want to dive into the goth music scene, some of the bands that might appeal to you if you enjoy Zeitgeist Zero are Diva Destruction, London After Midnight, and The Last Dance.