While having good base accuracy, the Cestra has significant recoil that scatters its shots, making it ineffective for long range shooting. Steady Hands is a must if one plans to utilize the Cestra's high base accuracy effectively.
In the video, It has a very clear wind up time and high fire rate, suggesting it's a secondary version of the Supra.
The Cestra's barrel rotates slowly clockwise when not in use, and spins faster as it is fired.
The reload animation consists of the player pulling out the barrel, flipping it and reinserting it back into the Cestra, oddly making the revolving barrel the magazine itself.
This may suggest that the cylinder may be composed of two separate batteries; one used to fire plasma shots while the other is collecting energy from ammunition reserve of the user.
Also, when holding a Datamass in a mission, the Datamass will spin whilst reloading.
Color of projectiles is colored by the weapon's energy color.
The Cestra's may be a numeral-derived name, just like other Corpus-designed weapons released around the time: the Tetra, which has a barrel with four blocks attached and a "quad-chambered clip"; and the Penta, which has a five-grenade magazine. Cestra may be a corruption of Sexa/Sext, from sixth, and has a rotating section with six blocks.
While Tetra- and Penta- are Greek numeral prefixes, Sexa-/Sext- is a Latin numeral prefix. The appropriate Greek prefix would be Hexa-.
The name may also have been derived from Cestrum, a genus of flowers that commonly grows on Southern America, which makes sense as the frontal lookings of the Cestra vaguely bear resemblance to a flower.