Observation information
- date-obs: 2021-08-17
- time-obs: 06:15:00.876400000
- date-end: 2021-08-17
- time-end: 08:38:29.877000000
- obs_id: A10_109T01_9000004646
- exposure: 3304.8430862
- 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_31826cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31826cztM0_level2_quad_clean.evt
|
| Size (bytes) | 578,067,840 | 77,791,680 |
| Size | 551.3 MB
| 74.2 MB
|
| Events in quadrant A | 3,498,249 | 488,963 |
| Events in quadrant B | 5,616,131 | 474,761 |
| Events in quadrant C | 4,114,093 | 459,476 |
| Events in quadrant D | 3,819,123 | 459,796 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14354 | 2 |
| B | 0 | 21485 | 2 |
| C | 0 | 16421 | 2 |
| D | 0 | 15479 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19 | 0 |
| B | 0 | 19 | 0 |
| C | 0 | 19 | 0 |
| D | 0 | 19 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6784 | 138 | 2.034198% |
| B | 6784 | 344 | 5.070755% |
| C | 6784 | 341 | 5.026533% |
| D | 6785 | 148 | 2.181282% |
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 | 8609 | 6786 | 20 | 20 | 0.23% | 0.29% |  |
| B | 8609 | 6786 | 87 | 87 | 1.01% | 1.28% |  |
| C | 8609 | 6786 | 82 | 82 | 0.95% | 1.21% |  |
| D | 8610 | 6787 | 60 | 60 | 0.70% | 0.88% |  |
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 | 174 | 50176 | 277.79 | 891 | 871 | 177.5 |
| A | 13 | 254 | 13486 | 71.07 | 891 | 871 | 177.5 |
| A | 13 | 6 | 9552 | 48.91 | 891 | 871 | 177.5 |
| B | 6 | 159 | 1714806 | 10270.44 | 864 | 843 | 166.9 |
| B | 0 | 183 | 211152 | 1260.22 | 864 | 843 | 166.9 |
| B | 4 | 80 | 120634 | 717.81 | 864 | 843 | 166.9 |
| C | 0 | 10 | 377248 | 1930.27 | 828 | 834 | 195.0 |
| C | 3 | 233 | 268047 | 1370.28 | 828 | 834 | 195.0 |
| C | 14 | 238 | 161603 | 824.43 | 828 | 834 | 195.0 |
| D | 8 | 195 | 299207 | 1474.29 | 852 | 829 | 202.4 |
| D | 12 | 79 | 197286 | 970.7 | 852 | 829 | 202.4 |
| D | 2 | 250 | 57913 | 282.05 | 852 | 829 | 202.4 |
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 |  |