Observation information
- date-obs: 2018-07-28
- time-obs: 20:34:52.439900000
- date-end: 2018-07-28
- time-end: 22:48:16.435900000
- obs_id: T02_073T01_9000002260
- exposure: 4268.78913289
- sourceid: Cygnus X-1
- observer: mithunnps
- ra_pnt: 299.563
- dec_pnt: 35.202
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T02_073T01_9000002260_15316cztM0_level2.evt
| modeM0/AS1T02_073T01_9000002260_15316cztM0_level2_quad_clean.evt
|
| Size (bytes) | 480,821,760 | 89,994,240 |
| Size | 458.5 MB
| 85.8 MB
|
| Events in quadrant A | 3,082,311 | 575,271 |
| Events in quadrant B | 3,157,471 | 588,771 |
| Events in quadrant C | 3,434,673 | 576,905 |
| Events in quadrant D | 4,443,843 | 529,115 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13599 | 3 |
| B | 0 | 13668 | 2 |
| C | 0 | 14140 | 2 |
| D | 0 | 17718 | 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 | 6519 | 38 | 0.582911% |
| B | 6519 | 48 | 0.736309% |
| C | 6519 | 36 | 0.552232% |
| D | 6519 | 605 | 9.280565% |
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 | 7525 | 6521 | 2 | 2 | 0.03% | 0.03% |  |
| B | 7525 | 6521 | 4 | 4 | 0.05% | 0.06% |  |
| C | 7525 | 6521 | 0 | 0 | 0.00% | 0.00% |  |
| D | 7525 | 6521 | 467 | 467 | 6.21% | 7.16% |  |
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 | 9 | 143 | 40896 | 252.27 | 789 | 773 | 159.0 |
| A | 13 | 252 | 9212 | 53.06 | 789 | 773 | 159.0 |
| A | 0 | 226 | 6915 | 38.62 | 789 | 773 | 159.0 |
| B | 10 | 16 | 20199 | 128.84 | 791 | 770 | 150.8 |
| B | 0 | 189 | 20049 | 127.85 | 791 | 770 | 150.8 |
| B | 12 | 111 | 18111 | 115.0 | 791 | 770 | 150.8 |
| C | 3 | 233 | 369592 | 2057.66 | 775 | 781 | 179.2 |
| C | 7 | 221 | 43083 | 236.01 | 775 | 781 | 179.2 |
| C | 13 | 61 | 5352 | 25.5 | 775 | 781 | 179.2 |
| D | 13 | 122 | 1314307 | 7170.83 | 752 | 732 | 183.2 |
| D | 1 | 255 | 248146 | 1350.64 | 752 | 732 | 183.2 |
| D | 2 | 33 | 30023 | 159.9 | 752 | 732 | 183.2 |
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 |  |