Observation information
- date-obs: 2021-08-18
- time-obs: 20:53:35.909500000
- date-end: 2021-08-18
- time-end: 23:00:46.911600000
- obs_id: A10_109T01_9000004646
- exposure: 5090.98565355
- sourceid: Cygnus X-1
- observer: tanmoy
- ra_pnt: 299.5903
- dec_pnt: 35.20161
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A10_109T01_9000004646_31850cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31850cztM0_level2_quad_clean.evt
|
| Size (bytes) | 574,704,000 | 113,149,440 |
| Size | 548.1 MB
| 107.9 MB
|
| Events in quadrant A | 3,518,713 | 754,286 |
| Events in quadrant B | 5,565,597 | 744,335 |
| Events in quadrant C | 4,003,132 | 709,659 |
| Events in quadrant D | 3,821,465 | 709,055 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15165 | 1 |
| B | 0 | 22203 | 1 |
| C | 0 | 16626 | 1 |
| D | 0 | 16175 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7321 | 10 | 0.136593% |
| B | 7322 | 82 | 1.119913% |
| C | 7322 | 340 | 4.643540% |
| D | 7322 | 31 | 0.423382% |
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 | 7631 | 7322 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7632 | 7323 | 11 | 11 | 0.14% | 0.15% |  |
| C | 7632 | 7323 | 14 | 14 | 0.18% | 0.19% |  |
| D | 7632 | 7323 | 21 | 21 | 0.28% | 0.29% |  |
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 | 12516 | 63.2 | 910 | 893 | 183.9 |
| A | 13 | 6 | 10506 | 52.27 | 910 | 893 | 183.9 |
| A | 3 | 137 | 9160 | 44.95 | 910 | 893 | 183.9 |
| B | 6 | 159 | 1957292 | 11299.62 | 897 | 875 | 173.1 |
| B | 10 | 247 | 53487 | 303.87 | 897 | 875 | 173.1 |
| B | 0 | 190 | 30116 | 168.89 | 897 | 875 | 173.1 |
| C | 14 | 238 | 203798 | 1004.98 | 863 | 873 | 201.9 |
| C | 3 | 233 | 151169 | 744.34 | 863 | 873 | 201.9 |
| C | 0 | 10 | 116923 | 574.74 | 863 | 873 | 201.9 |
| D | 8 | 195 | 203423 | 945.45 | 884 | 859 | 214.3 |
| D | 12 | 233 | 92575 | 428.08 | 884 | 859 | 214.3 |
| D | 2 | 250 | 73210 | 337.69 | 884 | 859 | 214.3 |
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 |  |