Observation information
- date-obs: 2021-08-13
- time-obs: 22:15:47.818300000
- date-end: 2021-08-14
- time-end: 00:32:56.818500000
- obs_id: A10_109T01_9000004638
- exposure: 5179.44036214
- 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_31777cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004638_31777cztM0_level2_quad_clean.evt
|
| Size (bytes) | 618,059,520 | 117,483,840 |
| Size | 589.4 MB
| 112.0 MB
|
| Events in quadrant A | 3,907,348 | 779,526 |
| Events in quadrant B | 5,749,122 | 778,861 |
| Events in quadrant C | 3,852,716 | 750,922 |
| Events in quadrant D | 4,707,813 | 733,388 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16273 | 2 |
| B | 0 | 22515 | 2 |
| C | 0 | 16062 | 2 |
| D | 0 | 19166 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7413 | 69 | 0.930797% |
| B | 7413 | 86 | 1.160124% |
| C | 7413 | 162 | 2.185350% |
| D | 7413 | 38 | 0.512613% |
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 | 7718 | 7415 | 39 | 39 | 0.51% | 0.53% |  |
| B | 7718 | 7415 | 7 | 7 | 0.09% | 0.09% |  |
| C | 7718 | 7415 | 38 | 38 | 0.49% | 0.51% |  |
| D | 7718 | 7415 | 24 | 24 | 0.31% | 0.32% |  |
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 | 323336 | 1737.59 | 923 | 906 | 185.6 |
| A | 14 | 238 | 23979 | 124.34 | 923 | 906 | 185.6 |
| A | 13 | 254 | 13214 | 66.33 | 923 | 906 | 185.6 |
| B | 6 | 159 | 2011441 | 11427.62 | 915 | 891 | 175.9 |
| B | 0 | 229 | 64403 | 360.99 | 915 | 891 | 175.9 |
| B | 10 | 245 | 29791 | 164.26 | 915 | 891 | 175.9 |
| C | 14 | 238 | 146349 | 691.08 | 894 | 902 | 210.5 |
| C | 0 | 10 | 101034 | 475.77 | 894 | 902 | 210.5 |
| C | 10 | 22 | 73586 | 345.35 | 894 | 902 | 210.5 |
| D | 8 | 195 | 1149569 | 5330.07 | 898 | 877 | 215.5 |
| D | 12 | 218 | 78736 | 361.28 | 898 | 877 | 215.5 |
| D | 2 | 250 | 39004 | 176.91 | 898 | 877 | 215.5 |
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 |  |