GTAC Observation Log 1. Date : 24/03/2015 2. Observation Sr. No. : 7702 3. Observer : Jayanta Roy, Maura Ann McLaughlin, Scott M. Ransom, Bhaswati Bhattacharyya, Duncan Ross Lorimer, Lina Levin 4. Observer's Email : jayanta.roy@manchester.ac.uk, maura.mclaughlin@mail.wvu.edu, sransom@nrao.edu, bhaswati.bhattacharyya@manchester.ac.uk, Duncan.Lorimer@mail.wvu.edu, lina.s.levin@gmail.com 5. Project Name : Coherently dedispersed timing studies at the GMRT for IPTA MSPs 6. Project Code : 27_043 7. Operator(s) : Nilesh, Rupsing, Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/jroy/27_043_24mar.cmd 9. LTA File : /gsbifrdata1/24mar/27_043_24mar2015_2s.lta.1,/gsbifrdata1/24mar/27_043_24mar2015_2s.lta 10. LogFlag File : /odisk/online1/logflags/27_043.FLAGS.9,/odisk/online1/logflags/27_043.FLAGS.8,/odisk/online1/logflags/27_043.FLAGS.7 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 24+4 dB, 32 MHz,OFF, IF-CH2 : 24+4 dB, 32 MHz,OFF GSB SETTINGS : 14. GSB Host : gsbm1 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : OFF 20. Stokes : Total_Intensity 21. Beam - 1 : IA 22. Beam - 2 : OFF 23. ACQ BW : 33.333333 MHz 24. Final BW : 33.333333 MHz; Step # 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 306 306 255 255 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) : W06 : Feed cage painting. W04 : 175pol low fringe. E06 : Strong RFI. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 24 Mar 2015 05:30:00 - 24 Mar 2015 10:23:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :25 37. Comments (During Observations) : 05:50 : Power eq. on 1830-360. ---------------------------------------------------------------------------- 06:00 : Setup IF=16MHz for raw mode. ---------------------------------------------------------------------------- 06:05 : Started scan on J1947-43(raw mode). 08:05 : Stopped RAW mode. 08:10 : Changed settings to IF = 32 MHz, default 325, ALC off, IA-OFF. W01 removed from GAC due to strong RFI. W06 started working. 08:14 : Started command file. 09:55 : E02, E04 removed from GAC, after 9 min into the scan on HR_2048-42. E02 - Servo problem. E04 - Painting. 10:23 : Stopped command file and observing session over.