Observation information
- date-obs: 2018-08-14
- time-obs: 10:31:24.250400000
- date-end: 2018-08-14
- time-end: 19:03:45.251300000
- obs_id: G08_028T01_9000002306
- exposure: 15640.3594722
- sourceid: GRS 1915+105
- observer: jsyadav
- ra_pnt: 288.7981
- dec_pnt: 10.94578
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1G08_028T01_9000002306cztM0_level2.fits
| modeM0/AS1G08_028T01_9000002306cztM0_level2_quad_clean.evt
|
| Size (bytes) | 271,370,880 | 279,429,120 |
| Size | 258.8 MB
| 266.5 MB
|
| Events in quadrant A | 1,681,050 | 1,746,856 |
| Events in quadrant B | 1,607,150 | 1,735,807 |
| Events in quadrant C | 1,606,706 | 1,607,848 |
| Events in quadrant D | 1,422,494 | 1,471,652 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 31 | 0 |
| B | 0 | 31 | 0 |
| C | 0 | 31 | 0 |
| D | 0 | 31 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 58053 | 0 |
| B | 0 | 60348 | 0 |
| C | 0 | 64094 | 0 |
| D | 0 | 68843 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 566 | 0 |
| B | 0 | 566 | 0 |
| C | 0 | 566 | 0 |
| D | 0 | 566 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 27627 | 578 | 2.092156% |
| B | 27627 | 766 | 2.772650% |
| C | 27627 | 1571 | 5.686466% |
| D | 27627 | 1213 | 4.390632% |
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 | 30742 | 27624 | 0 | 0 | 0.00% | 0.00% |  |
| B | 30742 | 27622 | 0 | 0 | 0.00% | 0.00% |  |
| C | 30742 | 27625 | 0 | 0 | 0.00% | 0.00% |  |
| D | 30741 | 27622 | 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 | 0 | 29 | 1599 | 11.01 | 437 | 410 | 108.0 |
| A | 7 | 110 | 1334 | 8.55 | 437 | 410 | 108.0 |
| A | 15 | 236 | 1293 | 8.17 | 437 | 410 | 108.0 |
| B | 2 | 9 | 1271 | 9.96 | 424 | 404 | 87.1 |
| B | 2 | 8 | 1100 | 7.99 | 424 | 404 | 87.1 |
| B | 5 | 232 | 1082 | 7.79 | 424 | 404 | 87.1 |
| C | 2 | 191 | 1081 | 6.16 | 425 | 396 | 111.1 |
| C | 12 | 241 | 1054 | 5.92 | 425 | 396 | 111.1 |
| C | 9 | 233 | 1049 | 5.87 | 425 | 396 | 111.1 |
| D | 3 | 14 | 1019 | 5.94 | 406 | 370 | 109.2 |
| D | 10 | 189 | 992 | 5.7 | 406 | 370 | 109.2 |
| D | 7 | 3 | 989 | 5.67 | 406 | 370 | 109.2 |
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 |  |