GTAC Observation Log 1. Date : 15/09/2018 2. Observation Sr. No. : 10533 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) : Navnath, Nilesh, Sachin 8. Command File : /odisk/gtac/cmd 9. LTA File : /gwbifrdata2/14sep/34_102C_750lo_sub2_bm3_gwb.lta, /gwbifrdata2/14sep/34_102B_500lo_sub3_bm2_gwb.lta, /gwbifrdata2/14sep/34_102A_1460lo_sub4_bm1_gwb.lta 10. LogFlag File : /odisk/online1/logflags/PNTG.FLAGS.2894 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_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 : 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) : W03 : 175 pol fluctuations. E03 : Low fringe. W01 : Servo problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 14 Sep 2018 22:00:00 - 15 Sep 2018 00:05:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 22:00 : Started settings. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 1 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_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 : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C03 C05 C10 C11 C13 C14 E02 S01 S02 W02 Total=10 # BEAM-1:175 :: C03 C05 C10 C11 C13 C14 E02 S01 S02 W02 Total=10 # BEAM-2:130 :: C01 C04 C06 C09 C12 Total=5 # BEAM-2:175 :: C01 C04 C06 C09 C12 Total=5 # BEAM-3:130 :: C00 C02 C08 E04 E05 E06 S03 S04 S06 W04 W05 W06 Total=12 # BEAM-3:175 :: C00 C02 C08 E04 E05 E06 S03 S04 S06 W04 W05 W06 Total=12 22:50:48 : Started scan on 2225-049 for ~ 5.27923 min. 22:56:17 : Started scan on 2225-049 for ~ 0 min. 22:56:36 : Started scan on 2225-049 for ~ 1.34218 min. 23:03:01 : Started scan on J2317+1439 for ~ 26.0382 min. 23:34:39 : Started scan on 2202+422 for ~ 1.07374 min. 23:36:13 : Started scan on 2202+422 for ~ 0.805306 min. 23:39:21 : Started scan on J2302+4442 for ~ 24.875 min. 24:03:00 : Observation session over. --------------------------------------------------------------