Observation information
- date-obs: 2017-10-31
- time-obs: 19:21:34.857500000
- date-end: 2017-10-31
- time-end: 21:30:48.862200000
- obs_id: G08_028T01_9000001656
- exposure: 3601.54547591
- 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_9000001656_11319cztM0_level2.evt
| modeM0/AS1G08_028T01_9000001656_11319cztM0_level2_quad_clean.evt
|
| Size (bytes) | 598,155,840 | 81,800,640 |
| Size | 570.4 MB
| 78.0 MB
|
| Events in quadrant A | 4,036,134 | 523,449 |
| Events in quadrant B | 4,265,498 | 529,667 |
| Events in quadrant C | 3,664,843 | 513,349 |
| Events in quadrant D | 5,721,463 | 469,710 |
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 M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16014 | 3 |
| B | 0 | 16744 | 2 |
| C | 0 | 14890 | 2 |
| D | 0 | 21217 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 15 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6312 | 188 | 2.978454% |
| B | 6312 | 342 | 5.418251% |
| C | 6312 | 226 | 3.580482% |
| D | 6312 | 679 | 10.757288% |
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 | 7592 | 6313 | 86 | 86 | 1.13% | 1.36% |  |
| B | 7592 | 6313 | 185 | 185 | 2.44% | 2.93% |  |
| C | 7592 | 6313 | 95 | 95 | 1.25% | 1.50% |  |
| D | 7592 | 6312 | 566 | 566 | 7.46% | 8.97% |  |
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 | 5 | 601201 | 3761.88 | 786 | 772 | 159.6 |
| A | 14 | 238 | 153572 | 957.34 | 786 | 772 | 159.6 |
| A | 1 | 162 | 62398 | 386.11 | 786 | 772 | 159.6 |
| B | 4 | 239 | 949313 | 6367.4 | 792 | 772 | 149.0 |
| B | 3 | 189 | 130118 | 868.28 | 792 | 772 | 149.0 |
| B | 15 | 204 | 44418 | 292.99 | 792 | 772 | 149.0 |
| C | 9 | 204 | 657475 | 3690.46 | 767 | 773 | 177.9 |
| C | 12 | 4 | 7201 | 36.12 | 767 | 773 | 177.9 |
| C | 13 | 61 | 5747 | 27.95 | 767 | 773 | 177.9 |
| D | 7 | 80 | 1087791 | 6176.12 | 728 | 706 | 176.0 |
| D | 1 | 52 | 615286 | 3491.65 | 728 | 706 | 176.0 |
| D | 10 | 253 | 538004 | 3052.59 | 728 | 706 | 176.0 |
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 |  |