Observation information
- date-obs: 2021-08-19
- time-obs: 17:44:40.926600000
- date-end: 2021-08-19
- time-end: 19:52:53.928800000
- obs_id: A10_109T01_9000004646
- exposure: 4826.01812196
- 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_31863cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31863cztM0_level2_quad_clean.evt
|
| Size (bytes) | 607,109,760 | 111,896,640 |
| Size | 579.0 MB
| 106.7 MB
|
| Events in quadrant A | 3,577,375 | 754,966 |
| Events in quadrant B | 5,667,319 | 741,032 |
| Events in quadrant C | 4,830,231 | 694,339 |
| Events in quadrant D | 3,833,333 | 706,404 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14967 | 2 |
| B | 0 | 21907 | 2 |
| C | 0 | 19136 | 2 |
| D | 0 | 15929 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6 | 0 |
| B | 0 | 6 | 0 |
| C | 0 | 6 | 0 |
| D | 0 | 6 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7063 | 79 | 1.118505% |
| B | 7064 | 171 | 2.420725% |
| C | 7064 | 413 | 5.846546% |
| D | 7064 | 58 | 0.821065% |
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 | 7693 | 7064 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7694 | 7065 | 24 | 24 | 0.31% | 0.34% |  |
| C | 7694 | 7065 | 87 | 87 | 1.13% | 1.23% |  |
| D | 7694 | 7065 | 11 | 11 | 0.14% | 0.16% |  |
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 | 14294 | 71.95 | 925 | 911 | 186.0 |
| A | 3 | 137 | 9458 | 45.95 | 925 | 911 | 186.0 |
| A | 0 | 226 | 7719 | 36.6 | 925 | 911 | 186.0 |
| B | 6 | 159 | 1860554 | 10625.4 | 906 | 884 | 175.0 |
| B | 0 | 229 | 91314 | 516.68 | 906 | 884 | 175.0 |
| B | 10 | 247 | 43667 | 244.44 | 906 | 884 | 175.0 |
| C | 0 | 10 | 973976 | 4737.18 | 869 | 877 | 205.4 |
| C | 3 | 233 | 243092 | 1179.14 | 869 | 877 | 205.4 |
| C | 14 | 238 | 158029 | 765.04 | 869 | 877 | 205.4 |
| D | 8 | 195 | 240914 | 1115.33 | 898 | 877 | 215.2 |
| D | 12 | 233 | 59357 | 271.73 | 898 | 877 | 215.2 |
| D | 2 | 250 | 46882 | 213.76 | 898 | 877 | 215.2 |
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 |  |