This ROS-Noetic package is basically code-implementation of rostopic hz /topic1_name /topic2_name ....
It is helpful to check whether given topics are published and if their hz values are above the given threshold value
In sensor_health.launch file, modify value of topics param in accordance with the following format:
/topic1_name:threshold1,topic2_name:threshold2 ...
After starting roscore type the following in new terminal:
roslaunch sensor_health sensor_health.launch
Then you should be able to see if any undesirable issue occurs