Overview
Total 5 independant stations
16 antenna per station for Neutrino detection
Each station is taking data in average 7 Hz
Target dataset for unblinding request: Data that taken from A2/3 on 2013 ~2020
Total live time of target data set
A2: 1988.66 days (~5.4 years)
A3: 1923.77 days (~5.3 years)

Fig. 8 5 station layout

Fig. 9 Single station
ARA02 Configuration
Dataset is separated in several configurations. Related doc. DB2436, DB2445, DB2636
User can find code implementation from get_config_number function
It is defined by parameters that can change detector sensitivity
2 more configurations are added for A2, config 6 (2018 ~ 2019), config 7 (2020)
From 2020, string 1 is showing duplication issue (will be discussed later) and excluded from L1 trigger

Fig. 10 A2 configuration

Fig. 11 A2 configuration. Corresponding dates and run numbers
ARA03 Configuration
4 more configurations are added on A3, config 6 (2018), config 7 / 8 (2019), and config 9 (2020)
In 2019, string 1 / 4 are showing dead bit / duplication issue.
From July 2019, string 1 is excluded from L1 trigger

Fig. 12 A3 configuration

Fig. 13 A3 configuration. Corresponding dates and run numbers