Observation information
- date-obs: 2021-11-04
- time-obs: 00:15:26.762300000
- date-end: 2021-11-04
- time-end: 02:17:35.764700000
- obs_id: A11_080T01_9000004756
- exposure: 2349.73386005
- 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_32992cztM0_level2.evt
| modeM0/AS1A11_080T01_9000004756_32992cztM0_level2_quad_clean.evt
|
| Size (bytes) | 451,296,000 | 58,717,440 |
| Size | 430.4 MB
| 56.0 MB
|
| Events in quadrant A | 2,552,621 | 375,228 |
| Events in quadrant B | 3,762,069 | 341,660 |
| Events in quadrant C | 2,819,350 | 350,642 |
| Events in quadrant D | 4,166,265 | 331,583 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 110 | 0 |
| B | 0 | 110 | 0 |
| C | 0 | 110 | 0 |
| D | 0 | 110 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19 | 0 |
| B | 0 | 19 | 0 |
| C | 0 | 19 | 0 |
| D | 0 | 20 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11170 | 3 |
| B | 0 | 14694 | 2 |
| C | 0 | 11874 | 2 |
| D | 0 | 15982 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5406 | 6 | 0.110988% |
| B | 5406 | 359 | 6.640770% |
| C | 5406 | 95 | 1.757307% |
| D | 5406 | 276 | 5.105438% |
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 | 7199 | 5407 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7199 | 5407 | 272 | 272 | 3.78% | 5.03% |  |
| C | 7199 | 5407 | 60 | 60 | 0.83% | 1.11% |  |
| D | 7199 | 5407 | 220 | 220 | 3.06% | 4.07% |  |
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 | 17391 | 128.64 | 645 | 633 | 130.3 |
| A | 9 | 143 | 12504 | 91.13 | 645 | 633 | 130.3 |
| A | 0 | 159 | 11448 | 83.02 | 645 | 633 | 130.3 |
| B | 5 | 172 | 1006620 | 8488.44 | 620 | 607 | 118.5 |
| B | 0 | 189 | 88054 | 737.85 | 620 | 607 | 118.5 |
| B | 0 | 229 | 48152 | 401.17 | 620 | 607 | 118.5 |
| C | 0 | 10 | 278431 | 1949.15 | 613 | 617 | 142.5 |
| C | 14 | 67 | 63130 | 438.59 | 613 | 617 | 142.5 |
| C | 1 | 241 | 53865 | 373.59 | 613 | 617 | 142.5 |
| D | 12 | 218 | 478953 | 3002.88 | 601 | 591 | 159.3 |
| D | 8 | 195 | 437369 | 2741.84 | 601 | 591 | 159.3 |
| D | 2 | 250 | 393487 | 2466.38 | 601 | 591 | 159.3 |
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 |  |