Observation information
- date-obs: 2021-08-13
- time-obs: 15:37:30.812900000
- date-end: 2021-08-13
- time-end: 17:35:19.814200000
- obs_id: A10_109T01_9000004638
- exposure: 4550.9990274
- 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_9000004638_31773cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004638_31773cztM0_level2_quad_clean.evt
|
| Size (bytes) | 525,712,320 | 121,328,640 |
| Size | 501.4 MB
| 115.7 MB
|
| Events in quadrant A | 3,480,950 | 832,263 |
| Events in quadrant B | 4,681,639 | 840,456 |
| Events in quadrant C | 3,528,023 | 815,176 |
| Events in quadrant D | 3,844,218 | 787,906 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14053 | 2 |
| B | 0 | 17550 | 1 |
| C | 0 | 14256 | 1 |
| D | 0 | 15164 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 114 | 0 |
| B | 0 | 114 | 0 |
| C | 0 | 114 | 0 |
| D | 0 | 114 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5713 | 217 | 3.798355% |
| B | 5714 | 150 | 2.625131% |
| C | 5714 | 205 | 3.587679% |
| D | 5714 | 139 | 2.432622% |
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 | 7068 | 5714 | 88 | 88 | 1.25% | 1.54% |  |
| B | 7069 | 5715 | 4 | 4 | 0.06% | 0.07% |  |
| C | 7069 | 5715 | 20 | 20 | 0.28% | 0.35% |  |
| D | 7069 | 5715 | 32 | 32 | 0.45% | 0.56% |  |
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 | 13 | 345131 | 2128.88 | 813 | 803 | 161.7 |
| A | 13 | 254 | 9813 | 55.71 | 813 | 803 | 161.7 |
| A | 3 | 137 | 7149 | 39.24 | 813 | 803 | 161.7 |
| B | 6 | 159 | 1458114 | 9708.14 | 805 | 789 | 150.1 |
| B | 10 | 245 | 45914 | 300.61 | 805 | 789 | 150.1 |
| B | 12 | 111 | 17328 | 110.18 | 805 | 789 | 150.1 |
| C | 0 | 10 | 205098 | 1100.7 | 797 | 808 | 185.6 |
| C | 14 | 238 | 129864 | 695.34 | 797 | 808 | 185.6 |
| C | 3 | 233 | 42094 | 222.45 | 797 | 808 | 185.6 |
| D | 8 | 195 | 654864 | 3487.59 | 800 | 784 | 187.5 |
| D | 12 | 218 | 111730 | 591.57 | 800 | 784 | 187.5 |
| D | 2 | 250 | 55467 | 291.57 | 800 | 784 | 187.5 |
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 |  |