Observation information
- date-obs: 2021-07-24
- time-obs: 06:02:28.145700000
- date-end: 2021-07-24
- time-end: 08:10:23.145900000
- obs_id: T04_029T01_9000004582
- exposure: 2888.71480098
- sourceid: GRS 1915+105
- observer: ravibt
- ra_pnt: 288.7982
- dec_pnt: 10.94581
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T04_029T01_9000004582_31471cztM0_level2.evt
| modeM0/AS1T04_029T01_9000004582_31471cztM0_level2_quad_clean.evt
|
| Size (bytes) | 530,472,960 | 70,390,080 |
| Size | 505.9 MB
| 67.1 MB
|
| Events in quadrant A | 3,273,469 | 432,980 |
| Events in quadrant B | 5,246,528 | 435,748 |
| Events in quadrant C | 3,636,738 | 406,802 |
| Events in quadrant D | 3,470,320 | 404,486 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13437 | 2 |
| B | 0 | 19778 | 2 |
| C | 0 | 14498 | 2 |
| D | 0 | 14437 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6474 | 43 | 0.664195% |
| B | 6474 | 140 | 2.162496% |
| C | 6474 | 214 | 3.305530% |
| D | 6474 | 18 | 0.278035% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
| Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
| A | 7564 | 6475 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7564 | 6474 | 0 | 0 | 0.00% | 0.00% |  |
| C | 7564 | 6474 | 95 | 95 | 1.26% | 1.47% |  |
| D | 7564 | 6475 | 4 | 4 | 0.05% | 0.06% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
| Pixel properties |
Quadrant properties |
| Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
| A | 13 | 254 | 11421 | 62.86 | 848 | 835 | 168.4 |
| A | 3 | 137 | 8704 | 46.73 | 848 | 835 | 168.4 |
| A | 0 | 226 | 7047 | 36.89 | 848 | 835 | 168.4 |
| B | 6 | 159 | 1903028 | 11936.28 | 836 | 816 | 159.4 |
| B | 0 | 190 | 25504 | 154.92 | 836 | 816 | 159.4 |
| B | 4 | 80 | 21107 | 127.32 | 836 | 816 | 159.4 |
| C | 0 | 10 | 339626 | 1829.32 | 792 | 799 | 185.2 |
| C | 14 | 238 | 128626 | 690.14 | 792 | 799 | 185.2 |
| C | 10 | 22 | 53210 | 282.97 | 792 | 799 | 185.2 |
| D | 8 | 195 | 365787 | 1916.93 | 807 | 789 | 190.4 |
| D | 12 | 218 | 24813 | 126.17 | 807 | 789 | 190.4 |
| D | 2 | 234 | 24374 | 123.87 | 807 | 789 | 190.4 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
| Quadrant A |
 |
 |
Quadrant B |
| Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
| Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
| Parameter |
Plot |
| CZT HV Monitor |  |
| D_VDD |  |
| Temperature 1 |  |
| Veto HV Monitor |  |
| Veto LLD |  |
| Alpha Counter |  |
| _CPM_Rate |  |
| CZT Counter |  |
| +2.5 Volts monitor |  |
| +5 Volts monitor |  |
| _ROLL_ROT |  |
| _Roll_DEC |  |
| _Roll_RA |  |
| Veto Counter |  |