Assigning labels and answering questions using given DSC graph
As example, Skoog / Leary's principles in instrumental analysis contained a section about DSC in the chapter of thermoanalysis.  Your university library likely has some of them or other books about the topic, too.

Then, beside monitoring glas transitions, melting, decomposition (while heating) or solidification / crystallisation (while cooling) I suggest to attribute the other phase transitions with (in the best case: simultaneous) visual observation of the sample (heat stage microscopy, like here) at these critical temperatures.  As these transitions take time, from a practical perspective, a heating rate of $\pu{10 K/min}$ is maybe rather quick.

After reading "liquid crystals" in the title, I thought a cholestic phase would be mentioned, too, but if your data support its absence, ok.  On the other hand, one of PerkinElmer's brochures includes this representation



(source)

which might be useful to complement the structural description of your liquid crystals.