Problem in px4flow calibration

i am tryting to fly my drone in pos hold mode but that was not working. Then i tried to do calibration of OF.flowX , OF.bodyX, IMU.GyrX. but it is showing me

Test: OpticalFlow = FAIL - Set FLOW_FXSCALER to 2492
Set FLOW_FYSCALER to 1436

Cal plots saved to flow_calibration.pdf
Cal parameters saved to flow_calibration.param

FLOW_FXSCALER 1STD = 30
FLOW_FYSCALER 1STD = 35

here is my google drive link which includes paramas and bin;
https://drive.google.com/drive/folders/1BbaILpC3Zwkb_AwYTSS9dTSN2ClHzE6R?usp=sharing

please help me with calibration