Observation information
- date-obs: 2021-11-04
- time-obs: 01:52:06.764100000
- date-end: 2021-11-04
- time-end: 03:58:51.766200000
- obs_id: A11_080T01_9000004756
- exposure: 3113.93792248
- sourceid: Cygnus X-1
- observer: ajayratheesh
- ra_pnt: 299.5903
- dec_pnt: 35.20161
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A11_080T01_9000004756_32993cztM0_level2.evt
| modeM0/AS1A11_080T01_9000004756_32993cztM0_level2_quad_clean.evt
|
| Size (bytes) | 437,405,760 | 72,380,160 |
| Size | 417.1 MB
| 69.0 MB
|
| Events in quadrant A | 2,593,995 | 479,032 |
| Events in quadrant B | 3,657,748 | 444,300 |
| Events in quadrant C | 2,678,787 | 447,475 |
| Events in quadrant D | 3,937,398 | 430,794 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 114 | 0 |
| B | 0 | 114 | 0 |
| C | 0 | 114 | 0 |
| D | 0 | 114 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 21 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11410 | 3 |
| B | 0 | 14516 | 2 |
| C | 0 | 11626 | 2 |
| D | 0 | 15309 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5573 | 5 | 0.089718% |
| B | 5573 | 323 | 5.795801% |
| C | 5573 | 61 | 1.094563% |
| D | 5573 | 150 | 2.691549% |
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 | 7035 | 5574 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7035 | 5574 | 226 | 226 | 3.21% | 4.05% |  |
| C | 7035 | 5574 | 27 | 27 | 0.38% | 0.48% |  |
| D | 7035 | 5574 | 117 | 117 | 1.66% | 2.10% |  |
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 | 47 | 18919 | 136.18 | 661 | 649 | 134.2 |
| A | 13 | 254 | 10120 | 70.59 | 661 | 649 | 134.2 |
| A | 13 | 6 | 8485 | 58.41 | 661 | 649 | 134.2 |
| B | 5 | 172 | 955266 | 7722.4 | 640 | 623 | 123.6 |
| B | 0 | 219 | 64311 | 515.19 | 640 | 623 | 123.6 |
| B | 0 | 229 | 41527 | 330.89 | 640 | 623 | 123.6 |
| C | 0 | 10 | 158843 | 1079.32 | 630 | 637 | 146.6 |
| C | 14 | 67 | 41742 | 280.43 | 630 | 637 | 146.6 |
| C | 3 | 233 | 13675 | 88.95 | 630 | 637 | 146.6 |
| D | 8 | 195 | 607667 | 3575.0 | 627 | 615 | 169.8 |
| D | 2 | 250 | 423120 | 2488.18 | 627 | 615 | 169.8 |
| D | 2 | 249 | 138160 | 810.02 | 627 | 615 | 169.8 |
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 |  |