This response is based on the information provided. We suggest you discuss with your contracting team, program manager and/or legal department as appropriate.
The FAR is not explicit as to the form or format government quality surveillance must take. FAR subpart 46.4 overall and FAR 46.401 General with more detail addresses government performing quality assurance. DFARS 246.401 General provides additional guidance, "The requirement for a quality assurance surveillance plan shall be addressed and documented in the contract file for each contract except for those awarded using simplified acquisition procedures. For contracts for services, the contracting officer should prepare a quality assurance surveillance plan to facilitate assessment of contractor performance, see 237.172 ."
"DFARS 237.172 Service contracts surveillance.
(a) Ensure that quality assurance surveillance plans are prepared in conjunction with the preparation of the statement of work or statement of objectives for solicitations and contracts for services. These plans should be tailored to address the performance risks inherent in the specific contract type and the work effort addressed by the contract."
We found no additional information directly related to Quality Assurance Surveillance Plans (QASPs) in the AFARS.
We note that the guidance is clear that some plan for quality surveillance is part of the program/contract process is needed and is to be documented in the file. The complexity of the service provided should drive the level of detail in the QASP or other plan.