Observation information
- date-obs: 2021-07-23
- time-obs: 10:47:28.147900000
- date-end: 2021-07-23
- time-end: 13:04:04.147400000
- obs_id: T04_029T01_9000004582
- exposure: 3964.46496037
- 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_31459cztM0_level2.evt
| modeM0/AS1T04_029T01_9000004582_31459cztM0_level2_quad_clean.evt
|
| Size (bytes) | 660,988,800 | 85,184,640 |
| Size | 630.4 MB
| 81.2 MB
|
| Events in quadrant A | 3,873,101 | 519,476 |
| Events in quadrant B | 6,293,607 | 521,877 |
| Events in quadrant C | 5,016,360 | 497,050 |
| Events in quadrant D | 4,301,338 | 493,229 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 156 | 0 |
| B | 0 | 156 | 0 |
| C | 0 | 156 | 0 |
| D | 0 | 156 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16469 | 1 |
| B | 0 | 24128 | 3 |
| C | 0 | 19996 | 1 |
| D | 0 | 18069 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7886 | 325 | 4.121227% |
| B | 7885 | 476 | 6.036779% |
| C | 7885 | 519 | 6.582118% |
| D | 7885 | 252 | 3.195942% |
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 | 7886 | 7886 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7885 | 7885 | 2 | 2 | 0.03% | 0.03% |  |
| C | 7885 | 7885 | 13 | 13 | 0.16% | 0.16% |  |
| D | 7885 | 7885 | 0 | 0 | 0.00% | 0.00% |  |
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 | 13658 | 62.47 | 1003 | 982 | 202.9 |
| A | 3 | 137 | 11083 | 49.78 | 1003 | 982 | 202.9 |
| A | 0 | 226 | 8379 | 36.46 | 1003 | 982 | 202.9 |
| B | 6 | 159 | 2340356 | 12226.04 | 978 | 951 | 191.3 |
| B | 0 | 190 | 79978 | 413.0 | 978 | 951 | 191.3 |
| B | 12 | 111 | 24807 | 124.67 | 978 | 951 | 191.3 |
| C | 3 | 233 | 1017769 | 4568.85 | 946 | 952 | 222.6 |
| C | 14 | 238 | 163479 | 730.28 | 946 | 952 | 222.6 |
| C | 0 | 10 | 44208 | 194.36 | 946 | 952 | 222.6 |
| D | 8 | 195 | 623236 | 2684.25 | 969 | 941 | 231.8 |
| D | 2 | 234 | 27476 | 114.46 | 969 | 941 | 231.8 |
| D | 5 | 233 | 23687 | 98.11 | 969 | 941 | 231.8 |
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 |  |