Using excel data sheet containing TB data with variables, "hospital name", your primary goal is to conduct a comprehensive analysis of the data and create a pivot table on a new worksheet using all inserted cells. Varibale name are "facilityname", "periodname$($date in month &year$)","$PHC headcount $5$ years and older $",$ "Screen for TB $5$ years and older", "Client $5$ years and older eligible for TB test $","$TB test $5$ years and older using GeneXpert", $"$DS$-$TB bacteriologically confirmed $5$ years and older", $"$DS$-$TB clinically diagnosed $5$ years and older $","$DS$-$TB treatment start $5$ years and older".

a$)$Efficiently identify $3$ High Burden facilities based on Headcount using any method, including PIVOT Table or other suitable techniques.

b$)$ Generate a TB Cascade Graph representing the data for the identified $3$ high burden facilities.

c$)$ Identify issues related to data elements and assess the overall data quality based on the performance of the facilities.