# configuration file for alertd
# format is "key value"
# comments start with `#' and go to end of line
# blank lines are okay
# lines cannot be continued
loglevel 2 # 0,1,2 = terse,verbose,debug
poll_time 0.05 # main loop time quantum
sample_time 3.0 # sample time in seconds
sample_time_th 3.0 # thread sample time
err_tout 5.0 # timeout for ALRM_ERR condition
init_time 5.0 # how long wait for children
email_list email@example.com # emails to receive alerts
Along with the options previously described, the operator must specify an e-mail list to receive alert reports, and the observatory file, which contains the longitude, latitude, and altitude of the observatory.
The next sections configure the mode of operation of the GCN monitor and the
simulated GCN monitor. It is strongly recommended that both of these options be
turned on at all times for normal operation!
# ================= GRB Coordinates Network monitor ============================
gcnmon run 1 # = 0/1 to run GCN monitor
gcnmon tout 0.0
gcnmon tpoll 0.1 # GCN sample time
gcnmon twait 3600.0 # ????
gcnmon devfile rotse3a.lanl.gov # host computer
gcn_portnum 5147 # socket port for alert stat.
pkt_delay 30.0 # not used
bind_delay 60.0 # not used
# ================ Simulated GCN Coordinate Socket Server================ #
simgcn run 1 # = 0/1 to run Simulated GCN server
simgcn tout 0.0
simgcn tpoll 0.1 # SimGCN sample time
simgcn twait 3600.0 # ????-not sure what it does
simgcn devfile rotse3a.lanl.gov # host computer
simgcn_portnum 2545 # socket port for SimGCN
These sections define the timeouts, device files and port numbers for the GCN Monitor and the SimGCN Monitor. For the GCN Monitor the port number must be registered with Scott Bartlemy at NASA; the SimGCN port number is arbitrary, and only needs to be known by the simalert program which simulates GCN triggers. The host computer should be the full name of the local computer.
The Alert Server, Alert Client, and Alert Database threads are no longer
supported, and should all be turned off. Sometime in the future all references
to this code will be deleted.
# Available GCN Trigger types of interest (deprecated values are commented out)
# header name index # pos_div priority
#alerttype gcn_test 2 100 101
alerttype gcn_imalive 3 1 101
alerttype gcn_killpacket 4 1 101
alerttype xrt_alexis 25 100 101
alerttype xrt_rxte_pca 26 10000 101
alerttype xrt_rxte_asm 28 10000 101
alerttype grb_beppo 34 10000 105
alerttype grb_beppo_nfi 36 10000 105
alerttype xrt_asm_trans 37 10000 105
alerttype grb_ipn 39 10000 105
alerttype grb_hete_alert 40 10000 150
alerttype grb_hete_update 41 10000 151
alerttype grb_hete_final 42 10000 151
alerttype grb_hete_ground 43 10000 151
alerttype tla_test_alert 99 10000 101
These are the GRB alert definitions. The alert index is defined by the GCN at
sock_pkt_def_doc.html. The pos_div value determines the precision of the RA and Dec positions given in the packet, also defined by the GCN. The larger values indicate more precise coordinates (although they might not be accurate!). The priority values range from 101 to 200. The SimGCN server automatically subtracts 100 from the priority for any test alert. True GCN triggers therefore always override simulated GCN triggers. In the case of a tie, the current trigger continues running, and the new trigger will wait until the current one is finished. This situation has not occurred yet.
Any trigger packet that arrives without coordinates is logged and ignored. Most HETE-2 type 40 triggers come without coordinates, although in the future they might include rough positions.