Mark-up sessions on President Carter's civil service revision bill scheduled for this week by Senate and House committees studying the measure were postponed yesterday until after the Memorial Day recess.

Sources said the postponements were decided upon to give the committees more time to study the complex bill.

The Senate Governmental Affairs Committee yesterday held a preliminary mark-up yesterday session, but with only six of 17 committee members present, it could take no formal vote. Nonetheless, several "tentative decisions" on changes were reached, a committee source said.

These changes included broadening the bill's protections for whistle blowers and strengthening the powers of the watchdog board and the special counsel, all of which are designed to guard the rights of employes against abuse by their bosses.

Meanwhile, Democrats on the House Post Office and Civil Service Committee also decided to delay formal mark-up sessions to give its Democratic members more time to reach a minimal working consensus on the complex bill, according to a committee source.

In a caucus yesterday, the Democrats also discussed concerns raised by some members over the so-called Lyle report, the source said, and will try to work out an arrangement with the White House to see the report in a closed session.

The report, prepared by a Carter transition team volunteer, contains unsubstantiated but "damning" allegations of patronage hiring and other personnel abuses during the Nixon administration by Civil Service Commission career officials, according to administration spokesmen who have resisted making it public.

The White House had agreed last week to allow interested members to see the report, with an understanding that they would not make its contents public. Some members had indicated they found this arrangement unsatisfactory.

At a hearing held earlier yesterday, Civil Service Commission Chairman Alan K. Campbell indicated a willingness to try to work out an agreement with the committee concerning the report. But he stressed the need to protect the rights of the officials involved against whom so far "nothing has been proved."

Another phase of civil service revision is scheduled to click in today when President Carter gives the reorganization portion of his plan to Congress in a formal Rose Garden send-off ceremony. Under the President's reorganization authority, this automatically becomes law on Aug. 10 unless Congress acts to reject it.