Get livetime, cut (tier2) time for a CoGeNT *day* range...

gistfile1.py

import datetime as dat
import csv

class CoGeNTCutLiveTime():
    _livetime_dict = None
    @classmethod
    def get_livetime_dict(cls):
        if cls._livetime_dict != None: return cls._livetime_dict
        readit = csv.reader(open('livetime.txt'), delimiter='\t')
        temp = [row for row in readit][1:]
        cls._livetime_dict = dict([(int(row[0]), int(row[5])) for row in temp])
        return cls._livetime_dict

    @classmethod
    def get_cut_time_and_livetime(cls, start_day, end_day):
        """
        Gives the VI start and end time and associated livetime for this period of
        time. Input is in days since day 1 of running,  
        """

        """ This is how miller does days:
        
        event_time = tree.time/1.e3 - ((datetime.date(1970, 1, 1) - datetime.date(1904, 1, 1)).days*3600*24)
        #and now orient this w.r.t December 3, 2009"
        cogentdt = datetime.datetime(2009,12,3,0,0,0)
        eventdt = datetime.datetime.fromtimestamp(event_time)
        diffdt = eventdt - cogentdt
        cogentday = diffdt.days #range:[0,...]
        
        """


        cogentdt = dat.datetime(2009,12,4,0,0,0)
        secs = (cogentdt - dat.datetime(1904, 1, 1,0,0,0)).days*3600*24
        begin_time = start_day*3600*24 + secs
        end_time = end_day*3600*24 + secs

        live_dict = cls.get_livetime_dict()
        return (begin_time*1000, end_time*1000, reduce(lambda a,b: a + b, [live_dict[day] for day in range(start_day, end_day)]))

print CoGeNTCutLiveTime.get_cut_time_and_livetime(1, 4)