Can Receive Packet but Sometimes No CSI in 2.4GHz

[Statisticss]

Hi everyone,

I am using the CSI tool in the 2.4GHz band under the monitor mode. However, when I send 100 packets consecutively, the receiver sometimes can only measure 70-80 CSI.

I checked the log and found that the 100 packets are actually received, but the CSI is not measured for some packets. Is it a problem due to the transmitter's automatic changing of the data rate? Is there a way to fix this issue?

BTW, I'm using only 1 antenna, and I set the rate to be 0x4101.