You may want to read a number of research papers in this regard before answering your own question. I published a few papers about corporate governance, both internal and external mechanisms; you may want to check them out as well.
Extensive readings on corporate governance and internal control mechanisms is the way to go. Lots have been written by scholars from various climes.their research findings may well assist you in this endeavour. I wish you lock.
You need to build on your evaluating indicators to help your measure. Quality control is something about the mean and its decviation, to see if the true measure is out of mean with two or three deviation. If the answer is true, then there is something wrong with the subject you are concerned. Follow the same logic to have your basic understanding on the financial and non-financial sectors, then use more specific qualitative and quantitative methods to have some deep understanding.
Thinking about a "quality control" applied by a "corporate government" in any company, firstable I think it is not a function or responsibility we should give to this organism.
Any corporate decision is difficult to establish if it was taken correctly, because to do that, market movements, time pressure, and available information should be considered.
In the other hand, those scenarios are practically impossible to be recorded or registered so that the corporate government could analyze them.
The quality level of different processes, decisions and functions of any corporation, could be evaluated through different indexes, as for example: profits, increase in sales, lower costs, and other financial and activity ratios that already exist.
In addition if we try to endorse this responsibility to the members of a "corporate government", these members should be experts for instance in finance, marketing and engineering process, to be able to evaluate quality of the CEO or CFO performance.
Israr internal control via internal audit is of equal importance as internal audit is the audit of operations of the department or the whole organisation. The external auditors who then audits the financial statements and corporate reports will also rely on the reports of the internal auditors in forming the basis of their external audit findings. Therefore both the internal and external auditors have their own role to play in ensuring that the organisation complies with the rules of corporate governance.
Over the years flaws have been proven in the rise of the corporate and financial scandals which results in the global financial crisis and the roles of the internal and external auditors have been questioned openly by the public with trust in the financial system have eroded enormously.
Your research could introduce better ways in the measurement of fraud based on prior scholars which in turn would be your novelty in your research.
Corporate governance rules vary from country to country due to the difference in the taxation and legal system.
Furthermore corporate governance for the banking sector is based on the Basel Committee of Banking Supervision or otherwise known as Basel 1, Basel 2 and Basel 3.
Corporate governance for non-banks are mainly for the use and application of the PLCs on the stock exchange of the respective countries which could also be governed by the Securities Commission of the respective countries.
It depends on the model of CG - shareholder or stakeholder, and the model of the board of directors - unitary or two-tier board. It is correctly to copare and measure quality of int. control only within similar models.