Why doesn't tegrastats output the VDDQ_VDD2_1V8AO metric?

I’m running some experiments and want to monitor the DDR power consumption. I’ve seen that some people can get the VDDQ_VDD2_1V8AO metric using the tegrastats command, but this metric doesn’t show up in my tegrastats output.

my env:

AGX orin 32GB

Jetpack 6.2.1

my tegrastats output:

12-26-2025 15:57:05 RAM 9297/30697MB (lfb 172x4MB) SWAP 11/15349MB (cached 0MB) CPU [2%@115,0%@115,2%@115,0%@115,0%@729,0%@729,1%@729,0%@729] EMC_FREQ 0%@2133 GR3D_FREQ 0%@[0,0] NVENC off NVDEC off NVJPG off NVJPG1 off VIC off OFA off NVDLA0 off NVDLA1 off PVA0_FREQ off APE 174 cpu@49.031C soc2@47.437C soc0@46.312C tj@49.031C soc1@48.062C VDD_GPU_SOC 2297mW/2297mW VDD_CPU_CV 382mW/382mW VIN_SYS_5V0 3741mW/3741mW