These penalties are minor in nature. You have submitted your reply against the show cause notice. It proves that the department has communicated all materials, evidence and particulars of charges along with the show cause notice.
At this juncture, you cannot say that the department did not furnish evidence, name of witnesses and report of inquiry officer. If you did not receive these materials then how did you submit your reply? This burden of proof lies upon you. It would be hard for you to discharge this burden of proof after the award of punishment.
When you have submitted the reply then you cannot say afterward that you had no information about the charges and incriminating materials. If you did not receive the report of the inquiry officer then you should ask the disciplinary authority to furnish that report. Because it is the duty of the disciplinary authority to communicate the inquiry officer’s report to the delinquent officer.
Minor penalty without holding a fresh departmental inquiry
So far as the minor penalty is concerned, it seems proper and lawful. There is no infirmity in the order of punishment. According to Rule 10 of U.P.G.S.(D&A) Rules 1999 the disciplinary authority can impose a minor penalty without holding a full-fledged departmental inquiry.
In D.H.B.V.N.L. Vidyut Nagar Hisar vs Y. S. Gulia (2013) 11 SCC 173 the Supreme Court has held that the disciplinary authority can impose a minor penalty without conducting a departmental inquiry if the service rule/regulation permits it to do so.
There is no legal peculiarity in the punishment so far as it relates to the imposing minor punishment without holding the full-fledged departmental inquiry. If there is no evidence which supports the rationale of punishment then you can challenge the punishment order. You should move a writ petition before the High Court under Article 226 of the Constitution of India. In that writ petition you should seek quashing of the punishment order and provide all consequential benefits.