How to get the count by days?

[mahesh27]

Query:
index=apl-app-grap  sourcetype=grap:apps source=*applications*  host=xxxxxx
|rex field =_raw "\|rank\:(?<Report>.*?)\|"
|eval Pass=if(Report="0", "Pass", null())
|stats count(Pass) as Passed_Count
 output:

Passed_Count

700

But i need the output for day wise, suppose if i select  7 days i should get 7 rows (showing each day count) like shown below:

Passed_Count
100
100
100
100
100
100
100

[ITWhisperer]

index=apl-app-grap  sourcetype=grap:apps source=*applications*  host=xxxxxx
|rex field =_raw "\|rank\:(?<Report>.*?)\|"
|eval Pass=if(Report="0", "Pass", null())
|bin span=1d _time
|stats count(Pass) as Passed_Count by _time