Observation information
- date-obs: 2019-03-23
- time-obs: 04:29:55.655900000
- date-end: 2019-03-23
- time-end: 06:32:37.652900000
- obs_id: A05_173T01_9000002812
- exposure: 3852.15347882
- 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_18829cztM0_level2.evt
| modeM0/AS1A05_173T01_9000002812_18829cztM0_level2_quad_clean.evt
|
| Size (bytes) | 468,279,360 | 89,334,720 |
| Size | 446.6 MB
| 85.2 MB
|
| Events in quadrant A | 3,053,923 | 582,744 |
| Events in quadrant B | 3,298,056 | 598,966 |
| Events in quadrant C | 3,174,631 | 559,496 |
| Events in quadrant D | 4,237,686 | 534,771 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12745 | 1 |
| B | 0 | 13620 | 1 |
| C | 0 | 13175 | 1 |
| D | 0 | 16831 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6152 | 34 | 0.552666% |
| B | 6153 | 81 | 1.316431% |
| C | 6153 | 89 | 1.446449% |
| D | 6153 | 454 | 7.378515% |
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 | 7362 | 6153 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7363 | 6154 | 15 | 15 | 0.20% | 0.24% |  |
| C | 7363 | 6154 | 23 | 23 | 0.31% | 0.37% |  |
| D | 7363 | 6154 | 356 | 356 | 4.83% | 5.78% |  |
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 | 205 | 29721 | 185.04 | 784 | 769 | 156.5 |
| A | 13 | 254 | 9578 | 56.3 | 784 | 769 | 156.5 |
| A | 0 | 226 | 6779 | 38.41 | 784 | 769 | 156.5 |
| B | 7 | 220 | 147140 | 984.42 | 782 | 763 | 148.7 |
| B | 0 | 228 | 20037 | 129.62 | 782 | 763 | 148.7 |
| B | 4 | 216 | 17633 | 113.45 | 782 | 763 | 148.7 |
| C | 14 | 238 | 117312 | 669.89 | 746 | 754 | 174.0 |
| C | 0 | 207 | 116419 | 664.76 | 746 | 754 | 174.0 |
| C | 3 | 233 | 19155 | 105.76 | 746 | 754 | 174.0 |
| D | 1 | 52 | 664558 | 3718.49 | 739 | 720 | 178.5 |
| D | 7 | 38 | 555362 | 3106.83 | 739 | 720 | 178.5 |
| D | 13 | 249 | 147601 | 822.75 | 739 | 720 | 178.5 |
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 |  |