Observation information
- date-obs: 2021-08-17
- time-obs: 04:48:09.875300000
- date-end: 2021-08-17
- time-end: 06:57:55.876800000
- obs_id: A10_109T01_9000004646
- exposure: 3270.94357754
- 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_31825cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31825cztM0_level2_quad_clean.evt
|
| Size (bytes) | 634,893,120 | 77,040,000 |
| Size | 605.5 MB
| 73.5 MB
|
| Events in quadrant A | 3,388,273 | 484,015 |
| Events in quadrant B | 7,150,455 | 461,231 |
| Events in quadrant C | 3,979,974 | 453,205 |
| Events in quadrant D | 4,238,541 | 449,409 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 140 | 0 |
| B | 0 | 140 | 0 |
| C | 0 | 140 | 0 |
| D | 0 | 140 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14228 | 2 |
| B | 0 | 26054 | 3 |
| C | 0 | 16063 | 2 |
| D | 0 | 17098 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6962 | 68 | 0.976731% |
| B | 6961 | 665 | 9.553225% |
| C | 6961 | 259 | 3.720730% |
| D | 6961 | 131 | 1.881914% |
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 | 7787 | 6963 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7786 | 6962 | 288 | 288 | 3.70% | 4.14% |  |
| C | 7786 | 6962 | 57 | 57 | 0.73% | 0.82% |  |
| D | 7786 | 6962 | 86 | 86 | 1.10% | 1.24% |  |
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 | 13806 | 73.28 | 875 | 857 | 176.7 |
| A | 3 | 137 | 9089 | 46.58 | 875 | 857 | 176.7 |
| A | 13 | 6 | 9051 | 46.37 | 875 | 857 | 176.7 |
| B | 4 | 80 | 1809858 | 11175.77 | 839 | 818 | 161.9 |
| B | 6 | 159 | 1787438 | 11037.27 | 839 | 818 | 161.9 |
| B | 10 | 245 | 222048 | 1366.7 | 839 | 818 | 161.9 |
| C | 0 | 10 | 330160 | 1700.19 | 821 | 828 | 193.7 |
| C | 3 | 233 | 215025 | 1105.8 | 821 | 828 | 193.7 |
| C | 14 | 238 | 158533 | 814.16 | 821 | 828 | 193.7 |
| D | 12 | 233 | 513203 | 2536.18 | 837 | 815 | 202.0 |
| D | 8 | 195 | 262299 | 1294.28 | 837 | 815 | 202.0 |
| D | 12 | 79 | 206234 | 1016.77 | 837 | 815 | 202.0 |
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 |  |