GTAC Observation Log 1. Date : 12/02/2022 2. Observation Sr. No. : 13943 3. Observer : Sangita Kumari, Bhaswati Bhattacharyya, Devojyoti Kansabanik, Jayanta Roy 4. Observer\'s Email : skumari@ncra.tifr.res.in, bhaswati@ncra.tifr.res.in, dkansabanik@ncra.tifr.res.in, jroy@ncra.tifr.res.in 5. Project Name : Investigating DM variations for the spider MSPs and its possible implications towards the timing studies 6. Project Code : 41_069 7. Operator(s) : Navnath, Nilesh, Pramod, Rupsing 8. Command File : /data1/gtac/cmd/41_069/41_069_12Feb2022_0800_cmd.py 9. LTA File : /gwbifrdata1/12feb/41_069b_12feb2022_band4_gwb.lta.1, /gwbifrdata1/12feb/41_069b_12feb2022_band4_gwb.lta, /gwbifrdata1/12feb/41_069a_12feb2022_band3_gwb.lta.1, /gwbifrdata1/12feb/41_069a_12feb2022_band3_gwb.lta 10. LogFlag File : 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/TGC 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 : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C09 : : Painting Work W06 : : Mechanical Work E05 : : FECB test 33. Note for Backup : 34. Start and End Time of Obs.(IST): 12 Feb 2022 08:00:00 - 12 Feb 2022 17:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :26 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : -1 -1 GPU_RF3 : 500 500 GPU_DDCLO3 : 0.000000 0.000000 GPU_SB3 : 1 1 GCODE3 : 41_069A GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 41_069B GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : PA GPU_BEAM_2 : PA GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 4 GPU_GAINEQ : ON GPU_TPA : From online/TGC tpa GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF GPU_PFB : OFF GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_WALSH : OFF GPU_ENV : RELEASED -------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C02 C04 C05 C06 E03 E04 S01 W01 W02 Total=11 # BEAM-1:175 :: C00 C01 C02 C04 C05 C06 E03 E04 S01 W01 W02 Total=11 # BEAM-2:130 :: C08 C10 C11 C12 C13 C14 E02 S02 S03 S04 W03 W04 Total=12 # BEAM-2:175 :: C08 C10 C11 C12 C13 C14 E02 S02 S03 S04 W03 W04 Total=12 08:00 : Started set up. 08:15 : Started command file. 09:00 : Change Beam 2 to PA and restarted correlator. 09:17 : Started command file. \'/data1/gtac/cmd/41_069/41_069_12Feb2022_0800_cmd.py\' 12:34 : Around 12:34 Phasing for band3 was not good. 10:00 : C09 taken for mechanical work. 10:00 : E05 taken for FE work. 11:11 : W06 taken for mechanical work. 11:34:32 : Started scan on 1459+716 for ~ 2.37118 min. 11:37:36 : Started scan on 1459+716 for ~ 1.34218 min. 11:41:05 : Started scan on J1544+4937 for ~ 45.4998 min. 12:30:55 : Started scan on 2052+365 for ~ 2.63961 min. 12:34:15 : Started scan on 2052+365 for ~ 1.34218 min. 12:39:11 : Started scan on J1959+2048 for ~ 63.4849 min. 13:47:53 : Started scan on 1822-096 for ~ 3.17648 min. 13:51:41 : Started scan on 1822-096 for ~ 0.760566 min. 13:53:01 : Started scan on 1822-096 for ~ 1.83431 min. 14:00:12 : Started scan on J2051-0827 for ~ 60.4427 min. 15:04:20 : Started scan on 2225-049 for ~ 2.5054 min. 15:07:31 : Started scan on 2225-049 for ~ 1.34218 min. 15:11:08 : Started scan on J2051-0827 for ~ 45.455 min. 16:00:58 : Started scan on 2225-049 for ~ 2.5054 min. 16:04:08 : Started scan on 2225-049 for ~ 1.29744 min. 16:08:13 : Started scan on J2256-1024 for ~ 54.045 min. 17:00:00 : Observation session over ---------------------------------------------------------------