GTAC Observation Log 1. Date : 25/03/2019 2. Observation Sr. No. : 10988 3. Observer : Vishal R Gajjar, Andrew Siemion, Shami Chatterjee, Yashwant Gupta, Geoffrey C Bower, Laura Spitler, Robert Wharton, Benito Marcote, Ryan Sean Lynch, Griffin Foster, Daniel C Price, Mayuresh Surnis, Yogesh Maan, Biprateep Dey, Dave MacMahon, Nectaria Gizani, Bryan Butler 4. Observer's Email : vishalg@berkeley.edu, siemion@berkeley.edu, shami@astro.cornell.edu, ygupta@ncra.tifr.res.in, gbower@astro.berkeley.edu, lspitler@mpifr-bonn.mpg.de, rsw95@cornell.edu, marcote@jive.eu, rlynch@nrao.edu, griffin.foster@gmail.com, dan@thetelegraphic.com, mayuresh.surnis@mail.wvu.edu, maan@astron.nl, biprateep.d@niser.ac.in, davidm@berkeley.edu, ngizani@eap.gr, bbutler@nrao.edu 5. Project Name : Low-frequency follow-up of FRB 121102 from the uGMRT 6. Project Code : 35_039 7. Operator(s) : Navnath, Nilesh 8. Command File : /odisk/gtac/cmd/35_039/10jan2019/35_039_1.cmd, /odisk/gtac/cmd/35_039/10jan2019/35_039_2.cmd 9. LTA File : /gwbifrdata/25mar/35_039_25mar2019_gwb.lta 10. LogFlag File : /odisk/online1/logflags/35_039.FLAGS.7 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_lenyadri 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 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 33.333333 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 591 591 540 540 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C12 :: Painting Work E05 : : Feed jam S04 : : Structural Repair work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 25 Mar 2019 13:00:00 - 25 Mar 2019 16:40:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 35_039 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : PA GPU_BEAM_2 : OFF GPU_BEAM_3 : Voltage GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- 13:00 : Started setup. 13:15 : Started power eq at 100 counts on 3C147. # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C13 C14 E02 S01 W01 Total=16 # BEAM-1:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C13 C14 E02 S01 W01 Total=16 # BEAM-3:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C13 C14 E02 S01 W01 Total=16 13:20 : Started cmd file. /odisk/gtac/cmd/35_039/10jan2019/35_039_1.cmd 13:18:52 : Started scan on 3C147 for ~ 1.65535 min. 13:22:50 : Started scan on 3C147 for ~ 11.9454 min. 13:34:59 : Started scan on 3C147 for ~ 1.16322 min. 13:36:13 : Started scan on 3C147 for ~ 0.53687 min. 13:38:08 : Started scan on B0329+54 for ~ 3.44492 min. 13:43:08 : Started scan on 3C147 for ~ 1.07374 min. 13:44:20 : Started scan on 3C147 for ~ 0.53687 min. 13:46:06 : Started scan on FRB121102 for ~ 35.4334 min. 14:05 : disk got full could not record PA data from till 15:00 IST 14:22:43 : Started scan on 3C147 for ~ 1.07374 min. 14:23:56 : Started scan on 3C147 for ~ 0.53687 min. 14:25:37 : Started scan on FRB121102 for ~ 35.4782 min. --- only CD data 14:20 : Disk full. data not got recorded. 15:00 : Restarted cmd file with different data disks. /odisk/gtac/cmd/35_039/10jan2019/obs.cmd 15:02:17 : Started scan on 3C147 for ~ 1.07374 min. 15:03:31 : Started scan on 3C147 for ~ 0.53687 min. 15:05:15 : Started scan on FRB121102 for ~ 35.5677 min. 15:42:08 : Started scan on 3C147 for ~ 1.07374 min. 15:43:19 : Started scan on 3C147 for ~ 0.492131 min. 15:45:09 : Started scan on FRB121102 for ~ 35.4782 min. 16:22:10 : Started scan on 3C147 for ~ 1.07374 min. 16:23:24 : Started scan on 3C147 for ~ 0.492131 min. 16:25:10 : Started scan on FRB121102 for ~ 5.90557 min. 16:33:29 : Started scan on B0329+54 for ~ 3.44492 min. 16:35:00 : stopped command file and observation closed.