In general, Arizona law not require employers to allow employees or former employees to inspect their personnel file. Essentially, the file is company property and does not belong to the employee. There are some exceptions: State employees have the right to inspect their personnel files, and some unionized employees may have negotiated for the right to inspect their files. Also, some employers will voluntarily allow employees to inspect their personnel files. If you end up in a lawsuit with your former employer regarding your employment, then you could get a copy of your personnel file at that point. Good luck.
My answers to questions posted on AVVO are intended to provide general information only, and are not intended to be legal advice. Employment law issues typically require a careful case-by-case analysis. Consequently, if you feel that you need legal advice, I would encourage you to consult in person with an employment attorney in your area.
Contact the state and ask the question. I would also talk with them about the last payment you received to make sure that was done correctly. Let them know the situation of your termination and they might catch some read flags. Here is their website.