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# SensorPreflightMag (UORB message)

Pre-flight sensor check metrics. The topic will not be updated when the vehicle is armed.

**TOPICS:** sensor_preflight_mag

## Fields

| Name                    | Type      | Unit [Frame] | Range/Enum | Description                                                           |
| ----------------------- | --------- | ------------ | ---------- | --------------------------------------------------------------------- |
| timestamp               | `uint64`  |              |            | time since system start (microseconds)                                |
| mag_inconsistency_angle | `float32` |              |            | maximum angle between magnetometer instance field vectors in radians. |

## Source Message

[Source file (GitHub)](https://github.com/PX4/PX4-Autopilot/blob/main/msg/SensorPreflightMag.msg)

::: details Click here to see original file

```c
#
# Pre-flight sensor check metrics.
# The topic will not be updated when the vehicle is armed
#
uint64 timestamp # time since system start (microseconds)

float32 mag_inconsistency_angle # maximum angle between magnetometer instance field vectors in radians.
```

:::