Observation information
- date-obs: 2021-08-20
- time-obs: 05:40:51.937700000
- date-end: 2021-08-20
- time-end: 08:02:58.938000000
- obs_id: A10_109T01_9000004646
- exposure: 3078.87131645
- 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_31871cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31871cztM0_level2_quad_clean.evt
|
| Size (bytes) | 561,150,720 | 75,674,880 |
| Size | 535.2 MB
| 72.2 MB
|
| Events in quadrant A | 3,422,414 | 476,479 |
| Events in quadrant B | 5,100,316 | 470,296 |
| Events in quadrant C | 3,953,969 | 449,111 |
| Events in quadrant D | 4,075,337 | 439,828 |
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 | 13961 | 2 |
| B | 0 | 19937 | 2 |
| C | 0 | 15862 | 2 |
| D | 0 | 16261 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 20 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6537 | 105 | 1.606241% |
| B | 6537 | 177 | 2.707664% |
| C | 6537 | 211 | 3.227780% |
| D | 6537 | 174 | 2.661771% |
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 | 8528 | 6539 | 0 | 0 | 0.00% | 0.00% |  |
| B | 8528 | 6538 | 4 | 4 | 0.05% | 0.06% |  |
| C | 8528 | 6538 | 12 | 12 | 0.14% | 0.18% |  |
| D | 8528 | 6538 | 82 | 82 | 0.96% | 1.25% |  |
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 | 11261 | 58.97 | 886 | 870 | 176.2 |
| A | 3 | 137 | 8912 | 45.64 | 886 | 870 | 176.2 |
| A | 13 | 6 | 7725 | 38.9 | 886 | 870 | 176.2 |
| B | 6 | 159 | 1631611 | 9849.11 | 866 | 847 | 165.6 |
| B | 10 | 247 | 26230 | 153.3 | 866 | 847 | 165.6 |
| B | 0 | 190 | 21109 | 122.37 | 866 | 847 | 165.6 |
| C | 3 | 233 | 507152 | 2595.63 | 834 | 842 | 195.1 |
| C | 14 | 238 | 140464 | 715.78 | 834 | 842 | 195.1 |
| C | 0 | 10 | 18201 | 88.99 | 834 | 842 | 195.1 |
| D | 8 | 195 | 474096 | 2389.23 | 843 | 822 | 198.1 |
| D | 12 | 218 | 279874 | 1408.74 | 843 | 822 | 198.1 |
| D | 2 | 250 | 43663 | 216.27 | 843 | 822 | 198.1 |
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 |  |