GTAC Observation Log 1. Date : 28/05/2018 2. Observation Sr. No. : 10291 3. Observer : BHAL CHANDRA JOSHI, Yashwant Gupta, Manjari Bagchi, Prakash Arumugasamy, Krishnakumar MA, Suryarao Bethapudi, Kishalay De, Yogesh Maan, Mayuresh Surnis, Abhimanyu Susobhanan, Dhruv Pathak, Gopakumar Achamveedu, ARUN KUMAR NAIDU, Neelam Dhanda Batra, Siraprapa Sanpa-arsa 4. Observer's Email : bcj@ncra.tifr.res.in, ygupta@ncra.tifr.res.in, manjari.bagchi@gmail.com, prakash@ncra.tifr.res.in, kkma@ncra.tifr.res.in, ep14btech11008@iith.ac.in, kde@caltech.edu, ymaan@ncra.tifr.res.in, mayuresh.surnis@mail.wvu.edu, s.abhimanyu@tifr.res.in, pathakdhruv9786@gmail.com, gopu.tifr@gmail.com, arun@ncra.tifr.res.in, neelam.dhanda@gmail.com, s.tuck.sanpaarsa@gmail.com 5. Project Name : Indian Pulsar Timing Array (InPTA) experiment using the upgraded wideband GMRT and the ORT 6. Project Code : 34_102 7. Operator(s) : Sachin, Shilpa, Surender 8. Command File : /odisk/gtac/cmd/bcj/34_102_set1_28may18.cmd 9. LTA File : /gwbifrdata/28may/34_102_610_28may2018_gwb.lta, /gwbifrdata/28may/34_102_325_28may2018_gwb.lta, /gwbifrdata/28may/34_102_1420_28may2018_gwb.lta 10. LogFlag File : /odisk/online1/logflags/34_102C.FLAGS.6, /odisk/online1/logflags/34_102B.FLAGS.7, /odisk/online1/logflags/34_102A.FLAGS.6 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 : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 16.666666 MHz 24. Final BW : 4 MHz; Step # 1 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 137.0199 28. LO5 -2 : 167.9801 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 :27 32. Name of Non-Working Antennas (with reason for each) : C05 : : Taken for Painting. C14 : : Taken for Mech Work. S02 : : Taken for Painting. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 28 May 2018 12:00:00 - 28 May 2018 17:08:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 12:00 : Started set-up. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 100.0000 GPU_FINAL_BW : 100.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 1024 GPU_CHAN_NUM : 0:1023:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF2 : 750 750 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 34_102C GPU_RF3 : 500 500 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 34_102B GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 34_102A GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : Voltage GPU_BEAM_3 : PA GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 64 inputs. GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C02 C08 E04 E05 E06 S03 S04 S06 W03 W04 W05 W06 Total=13 # BEAM-1:175 :: C00 C02 C08 E04 E05 E06 S03 S04 S06 W03 W04 W05 W06 Total=13 # BEAM-2:130 :: C01 C04 C06 C09 C12 Total=5 # BEAM-2:175 :: C01 C04 C06 C09 C12 Total=5 # BEAM-3:130 :: C03 C10 C11 C13 E02 E03 S01 W01 W02 Total=9 # BEAM-3:175 :: C03 C10 C11 C13 E02 E03 S01 W01 W02 Total=9 ---------------------------------------------- 11:58:00 : Power eq and phasing done on 3C48. 12:00:35 : Started command file. /odisk/gtac/cmd/bcj/34_102_set1_28may18.cmd 13:38:52 : Stopped command file due to phasing not done on 3C147. 14:00:28 : Restarted command file after phasing. 14:32:00 : C14 Released for observation. 15:30:52 : C14 added in GAC. 16:07:00 : W03 not phased properly, so removed from GAC. 17:08:00 : Stopped command file and observing sessio