Why i am getting such kind of clock pulse?even though i have given the values correctly,it dosent happen often but since few examples i am getting such kind of clock pulse.Also the output of the circuit is getting simulated correctly.
Given below is the screen shot of clock pulse.
Oscad General None min None sec
The clock pulse depends on the parameters that you give - rise time, period, pulse width, fall time etc. Copy paste your netlist here or share the project folder.
You should increase the number of steps in transient simulation, for accuracy. Your stop time is 10ms and start time is 0 s but the step time is only 1ms. So you get only 10 data points after simulation. For an accurate result, you should sample the output faster. For example, try the step size as 10 micro seconds. Then you will see that you get a continuous smooth waveform.