Here are a few things I can see in your flight log:
- You’re only moving the elevator stick during that period of time (meaning you’re not commanding the Mavic in that direction)
- The log shows the Mavic is rolling slightly at the points where it’s moving toward the right (which would explain why it’s moving sideways)
- At the end of that stretch where the remote controller sticks are back in the center and the Mavic is not moving, the pitch and roll are not close to 0 (an indicator of light wind)
Can you try a new test where you flight straight in one direction (like you did above). And then turn around and flight straight back in the opposite direction. That will at least confirm whether or not your Mavic is really always veering toward the right.