Observation information
- date-obs: 2021-07-24
- time-obs: 00:40:48.148300000
- date-end: 2021-07-24
- time-end: 02:58:28.147500000
- obs_id: T04_029T01_9000004582
- exposure: 3827.82345927
- 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_31468cztM0_level2.evt
| modeM0/AS1T04_029T01_9000004582_31468cztM0_level2_quad_clean.evt
|
| Size (bytes) | 544,933,440 | 96,552,000 |
| Size | 519.7 MB
| 92.1 MB
|
| Events in quadrant A | 3,261,514 | 645,368 |
| Events in quadrant B | 5,155,673 | 661,394 |
| Events in quadrant C | 3,789,890 | 597,011 |
| Events in quadrant D | 3,872,622 | 583,540 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 20 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13362 | 2 |
| B | 0 | 19279 | 2 |
| C | 0 | 14973 | 2 |
| D | 0 | 15479 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6254 | 45 | 0.719539% |
| B | 6254 | 104 | 1.662936% |
| C | 6254 | 306 | 4.892869% |
| D | 6254 | 132 | 2.110649% |
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 | 7594 | 6255 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7594 | 6254 | 1 | 1 | 0.01% | 0.02% |  |
| C | 7594 | 6254 | 157 | 157 | 2.07% | 2.51% |  |
| D | 7594 | 6254 | 57 | 57 | 0.75% | 0.91% |  |
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 | 9487 | 51.33 | 846 | 833 | 168.6 |
| A | 3 | 137 | 8265 | 44.08 | 846 | 833 | 168.6 |
| A | 0 | 226 | 7205 | 37.79 | 846 | 833 | 168.6 |
| B | 6 | 159 | 1775445 | 11277.41 | 840 | 822 | 157.4 |
| B | 0 | 190 | 53922 | 337.44 | 840 | 822 | 157.4 |
| B | 4 | 80 | 23141 | 141.83 | 840 | 822 | 157.4 |
| C | 0 | 10 | 338737 | 1831.14 | 788 | 796 | 184.6 |
| C | 10 | 22 | 211962 | 1144.21 | 788 | 796 | 184.6 |
| C | 14 | 238 | 128747 | 693.3 | 788 | 796 | 184.6 |
| D | 8 | 195 | 536809 | 2871.37 | 794 | 776 | 186.7 |
| D | 12 | 218 | 232055 | 1238.9 | 794 | 776 | 186.7 |
| D | 2 | 250 | 45492 | 239.53 | 794 | 776 | 186.7 |
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 |  |