The model states than can be saved are not meant for analysis. They store the complete state of the system, allowing a restart of the model without having to run a long startup period. For detailed information about the content of the individual model state files see:
Note that the saved model states will be placed in the Output directory. To use the files, they have to be placed in the Initial state directory (of course you can always give your Initial state directory the same name as Output directory).