Gyro sensor drift

By doing the sensors test in my Vex iq, I adjust the zero and then I rotate with the hand 360 ° in one direction and then the same in the opposite direction and the results I get are as follows.

When I manually rotate it clockwise, it starts at 360 ° and the full turn (360 °) ends at 100. When I turn anti-clockwise, it starts at 0 ° and ends at 259 °. say missing 100 just like clockwise
Is it possible that the sensor sent to me has a problem?