Observation information
- date-obs: 2019-03-21
- time-obs: 16:34:31.636100000
- date-end: 2019-03-21
- time-end: 17:54:24.667200000
- obs_id: A05_173T01_9000002812
- exposure: 2829.23797727
- sourceid: GRS 1915+105
- observer: rawatdivya
- ra_pnt: 288.7991
- dec_pnt: 10.94602
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A05_173T01_9000002812_18806cztM0_level2.evt
| modeM0/AS1A05_173T01_9000002812_18806cztM0_level2_quad_clean.evt
|
| Size (bytes) | 319,150,080 | 60,946,560 |
| Size | 304.4 MB
| 58.1 MB
|
| Events in quadrant A | 2,252,636 | 389,964 |
| Events in quadrant B | 2,439,151 | 393,942 |
| Events in quadrant C | 2,492,813 | 376,030 |
| Events in quadrant D | 2,177,019 | 372,282 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 92 | 0 |
| B | 0 | 92 | 0 |
| C | 0 | 92 | 0 |
| D | 0 | 92 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9431 | 1 |
| B | 0 | 10089 | 1 |
| C | 0 | 10285 | 1 |
| D | 0 | 9445 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 4449 | 129 | 2.899528% |
| B | 4449 | 154 | 3.461452% |
| C | 4449 | 206 | 4.630254% |
| D | 4449 | 117 | 2.629804% |
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 | 4794 | 4450 | 0 | 0 | 0.00% | 0.00% |  |
| B | 4794 | 4450 | 7 | 7 | 0.15% | 0.16% |  |
| C | 4794 | 4450 | 23 | 23 | 0.48% | 0.52% |  |
| D | 4794 | 4450 | 3 | 3 | 0.06% | 0.07% |  |
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 | 8 | 144 | 17105 | 138.67 | 576 | 563 | 119.3 |
| A | 13 | 254 | 7614 | 59.11 | 576 | 563 | 119.3 |
| A | 9 | 143 | 6421 | 49.11 | 576 | 563 | 119.3 |
| B | 7 | 220 | 159092 | 1411.23 | 571 | 557 | 112.3 |
| B | 12 | 111 | 13137 | 111.98 | 571 | 557 | 112.3 |
| B | 0 | 228 | 13041 | 111.13 | 571 | 557 | 112.3 |
| C | 3 | 233 | 225492 | 1729.07 | 547 | 553 | 130.1 |
| C | 14 | 238 | 83609 | 638.44 | 547 | 553 | 130.1 |
| C | 0 | 207 | 46548 | 353.56 | 547 | 553 | 130.1 |
| D | 14 | 34 | 31044 | 222.91 | 559 | 543 | 136.8 |
| D | 7 | 55 | 21755 | 155.02 | 559 | 543 | 136.8 |
| D | 2 | 234 | 20955 | 149.18 | 559 | 543 | 136.8 |
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 |  |