Acc CIR data is too large (DWM3000)

Wireless Connectivity Ultra-Wideband
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1

Hello, I had a problem getting the CIR data

here is my code & result (acc CIR data)

Code:
static uint8_t CIR_data[6097];

                int32_t real_CIR[1016];

                dwt_readaccdata(CIR_data, 6097, 0);

                int j = 0;
                for(int i=1; i<6097; i+=6){
                	real_CIR[j] = ((CIR_data[i+2]) << 16 | (CIR_data[i+1]) << 8 | (CIR_data[i])) & 0x3ffff;
                	printf("%d,",real_CIR[j]);
                	Sleep(0.001);
                	j++;
                }

Result:

problem
problem1950×842 133 KB

Output data(real part) joy: :joy:
Low : 218 (0xda)
Mid : 254 (0xfe)
High : 255 (0xff) so, → 11111111 11111110 11011010 → 111111111011011010 (18bit)

I read 1016 CIR samples and created a CIR real value array that excluding the upper 6 bits of the real part, but the values are too large.

Much thanks!