Accelerometer Z offset

Hello guys, can anyone please explain why the z axis of my accelerometer has an offset of -1000 in raw sensor reading. I am using a MPU9250. Also all my reading are in negative. For example, for a displacement in positive x axis, that is, vertically upwards, the raw sensor reading of the Z gyro and Z accel provides a value in negative. Is this norma


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Hi

It is the acceleration of gravity:981cm/s2.

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Actually, it is 1.0G down, scaled by a factor of 1,000.

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