Observation information
- date-obs: 2021-07-22
- time-obs: 22:29:08.163400000
- date-end: 2021-07-23
- time-end: 00:50:49.158900000
- obs_id: T04_029T01_9000004582
- exposure: 3997.63545892
- 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_31452cztM0_level2.evt
| modeM0/AS1T04_029T01_9000004582_31452cztM0_level2_quad_clean.evt
|
| Size (bytes) | 562,510,080 | 93,090,240 |
| Size | 536.5 MB
| 88.8 MB
|
| Events in quadrant A | 3,143,513 | 622,898 |
| Events in quadrant B | 5,568,984 | 599,866 |
| Events in quadrant C | 4,093,102 | 571,861 |
| Events in quadrant D | 3,799,640 | 580,716 |
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 | 21 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13312 | 2 |
| B | 0 | 20923 | 2 |
| C | 0 | 16247 | 2 |
| D | 0 | 15527 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6351 | 24 | 0.377893% |
| B | 6351 | 385 | 6.062037% |
| C | 6351 | 412 | 6.487167% |
| D | 6350 | 34 | 0.535433% |
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 | 7546 | 6352 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7546 | 6351 | 310 | 310 | 4.11% | 4.88% |  |
| C | 7546 | 6351 | 221 | 221 | 2.93% | 3.48% |  |
| D | 7545 | 6351 | 16 | 16 | 0.21% | 0.25% |  |
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 | 0 | 230 | 12374 | 71.79 | 812 | 798 | 161.3 |
| A | 13 | 254 | 10061 | 57.44 | 812 | 798 | 161.3 |
| A | 3 | 137 | 7932 | 44.24 | 812 | 798 | 161.3 |
| B | 6 | 159 | 1755034 | 11888.76 | 777 | 759 | 147.6 |
| B | 12 | 1 | 714089 | 4834.25 | 777 | 759 | 147.6 |
| B | 0 | 190 | 23678 | 155.32 | 777 | 759 | 147.6 |
| C | 3 | 233 | 550651 | 3096.22 | 759 | 767 | 177.6 |
| C | 0 | 10 | 206404 | 1157.87 | 759 | 767 | 177.6 |
| C | 10 | 22 | 206070 | 1155.99 | 759 | 767 | 177.6 |
| D | 8 | 195 | 776421 | 4215.15 | 777 | 760 | 184.0 |
| D | 5 | 233 | 28573 | 151.14 | 777 | 760 | 184.0 |
| D | 2 | 234 | 24857 | 130.95 | 777 | 760 | 184.0 |
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 |  |