GTAC Observation Log 1. Date : 20/03/2018 2. Observation Sr. No. : 10169 3. Observer : Poonam Chandra 4. Observer's Email : poonam@ncra.tifr.res.in 5. Project Name : Target of Opportunity observation for Gamma ray bursts at uGMRT frequencies\r\n 6. Project Code : DDTB304 7. Operator(s) : Navnath 8. Command File : /odisk/gtac/cmd/poonam/ddtb304/20mar/obs.txt 9. LTA File : /gsbifrdata/20mar/ddtb304_20mar2018_gsb.lta, /gsbifrdata/20mar/ddtb304_20mar2018_1320.lta, /gwbifrdata2/20mar/ddtb304_20mar2018_gwb.lta 10. LogFlag File : /odisk/online1/logflags/DDTB304.FLAGS.8 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1454 MHz ,RF2 : 1454 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1505 MHz, ILO2 : 1505MHz , 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_shivneri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Full_Stokes 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) : 1454 1454 1505 1505 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) : C00 : : Feed jam C12 : : Feed jam 33. Note for Backup : 34. Start and End Time of Obs.(IST): 20 Mar 2018 20:00:00 - 20 Mar 2018 23:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 20:00 : Started setup. 20:15 : Started scan on 3C147 for 10 min. 20:25 : Started cmd file. /odisk/gtac/cmd/poonam/ddtb304/20mar/obs.txt 22:40 : cmd file stooped and started scan on phase cal. 22:50 : Started scan on 3C286 for 10 min 23:00 : Observation session over. ======================================================================= Note : 400Mhz_Fullstoke mode was showing buffer loss,so chosen 200Mhz and full stokes as per the bandwidth choice given in setup file. ========================================================================= ------------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 : Full_Stokes GPU_SIDEBAND : 1 1 GPU_RF4 : 1450 1450 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : DDTB304 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 64 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 64 inputs. GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF --------------------------------