Observation information
- date-obs: 2017-07-26
- time-obs: 07:56:27.876200000
- date-end: 2017-07-26
- time-end: 10:09:45.880000000
- obs_id: A03_117T06_9000001404
- exposure: 3879.69711933
- sourceid: 4U 1957+115
- observer: dipak
- ra_pnt: 299.8509
- dec_pnt: 11.709
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A03_117T06_9000001404_09876cztM0_level2.evt
| modeM0/AS1A03_117T06_9000001404_09876cztM0_level2_quad_clean.evt
|
| Size (bytes) | 546,180,480 | 81,541,440 |
| Size | 520.9 MB
| 77.8 MB
|
| Events in quadrant A | 3,984,717 | 482,586 |
| Events in quadrant B | 3,836,965 | 496,870 |
| Events in quadrant C | 4,333,108 | 478,649 |
| Events in quadrant D | 3,850,663 | 462,756 |
Level1 data integrity
| 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 | 17287 | 3 |
| B | 0 | 16687 | 2 |
| C | 0 | 18488 | 11 |
| D | 0 | 17254 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 160 | 0 |
| B | 0 | 160 | 0 |
| C | 0 | 160 | 0 |
| D | 0 | 160 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7893 | 436 | 5.523882% |
| B | 7893 | 401 | 5.080451% |
| C | 7891 | 465 | 5.892789% |
| D | 7893 | 330 | 4.180920% |
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 | 7998 | 7896 | 46 | 46 | 0.58% | 0.58% |  |
| B | 7998 | 7896 | 0 | 0 | 0.00% | 0.00% |  |
| C | 7998 | 7896 | 98 | 98 | 1.23% | 1.24% |  |
| D | 7998 | 7896 | 8 | 8 | 0.10% | 0.10% |  |
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 | 15 | 174 | 187904 | 933.78 | 972 | 948 | 200.2 |
| A | 13 | 14 | 34164 | 165.9 | 972 | 948 | 200.2 |
| A | 15 | 239 | 16974 | 80.04 | 972 | 948 | 200.2 |
| B | 0 | 85 | 42185 | 213.6 | 973 | 946 | 193.1 |
| B | 12 | 111 | 23955 | 119.18 | 973 | 946 | 193.1 |
| B | 11 | 111 | 19587 | 96.55 | 973 | 946 | 193.1 |
| C | 4 | 254 | 639559 | 2862.54 | 939 | 943 | 223.1 |
| C | 14 | 234 | 21968 | 94.24 | 939 | 943 | 223.1 |
| C | 13 | 61 | 7035 | 27.3 | 939 | 943 | 223.1 |
| D | 1 | 52 | 141492 | 575.63 | 938 | 916 | 244.2 |
| D | 10 | 199 | 105512 | 428.3 | 938 | 916 | 244.2 |
| D | 2 | 234 | 29666 | 117.73 | 938 | 916 | 244.2 |
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 |  |