GTAC Observation Log

1. Date : 23/04/2017
2. Observation Sr. No. : 9312
3. Observer : Paulo Cesar Freire, Yashwant Gupta, Alessandro Ridolfi
4. Observer's Email : pfreire@mpifr-bonn.mpg.de, ygupta@ncra.tifr.res.in, ridolfi@mpifr-bonn.mpg.de
5. Project Name : Determining the masses of the components of two binary pulsars
6. Project Code : 32_083
7. Operator(s) : Pramod
8. Command File : /odisk/gtac/cmd
9. LTA File : /gsbifrdata/23apr/32_083_gsb_23apr2017.lta, /gwbifrdata1/23apr/32_083_23apr2017.lta
10. LogFlag File : /odisk/online1/logflags/32_083.FLAGS

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 
13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 24+4 dB, 32 MHz,OFF, IF-CH2 : 24+4 dB, 32 MHz,OFF

GSB SETTINGS :

14. GSB Host : gsbm1
15. GSB Mode : Realtime
16. GSB LTA : 8
17. GSB CTRL : ONLINE
18. GSB Fstop : ON
19. GAIN EQ : ON
20. Stokes : Total_Intensity
21. Beam - 1 : PA
22. Beam - 2 : PA
23. ACQ BW : 33.333333 MHz
24. Final BW : 0 MHz; Step # 0
25. Maximum Channels : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 149
28. LO5 -2  : 156

29. Frequency Parameters (TPA) : 306 306 255 255 51 51
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :28

32. Name of Non-Working Antennas (with reason for each) :
S03 : GAB LO problem
S02 : ABC time out

33. Note for Backup :

34. Start and End Time of Obs.(IST): 23 Apr 2017 06:00:00 - 23 Apr 2017 07:10:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :28

37. Comments (During Observations) :
# GWB GAC configuration is as follows : 
# BEAM-1:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E04 S01 W01 W02 W03 Total=21
# BEAM-1:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E04 S01 W01 W02 W03 Total=21
# BEAM-2:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E04 S01 W01 W02 W03 Total=21
# BEAM-2:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E04 S01 W01 W02 W03 Total=21

 Settings for uGMRT system (using GWB4.5) -- primary mode : 
RF selection :  Band-3  with 200 MHz BW in GWB  
LO = 500 MHz, 200 MHz LPF  ==> Final band : 500 to 300 MHz (LSB signal) 
Use OF attenuation of 12+12 dB   

Backend settings : 
Interferometer in total intensity; 2048 channels; standard LTA integration  
Pulsar mode : Beam1 - IA  &  Beam2 - PA  (both total intensity) with data recording 
on gwbh7 & gwbh8;  use default settings of 2048 channels & beam integration = 8 
(sampling of 81.92 microsecond) 

06:05 : Phasing done on 1822-096.
06:09:39 : Started scan on B1804-08 for ~ 5.67069 min.
06:17:48 : Started scan on B1802-07 for ~ 32.2458 min.
06:50:35 : Started scan on B1804-08 for ~ 6.17401 min.
06:57:29 : Started scan on 1822-096 for ~ 8.0195 min.
07:05 : Stopped scan and observation session is over.