Observation information
- date-obs: 2021-08-20
- time-obs: 07:19:11.937500000
- date-end: 2021-08-20
- time-end: 09:51:44.938800000
- obs_id: A10_109T01_9000004646
- exposure: 3561.80479302
- 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_31872cztM0_level2.evt
| modeM0/AS1A10_109T01_9000004646_31872cztM0_level2_quad_clean.evt
|
| Size (bytes) | 631,008,000 | 87,860,160 |
| Size | 601.8 MB
| 83.8 MB
|
| Events in quadrant A | 3,805,007 | 565,671 |
| Events in quadrant B | 5,627,150 | 559,682 |
| Events in quadrant C | 4,353,380 | 534,135 |
| Events in quadrant D | 4,859,405 | 521,448 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15405 | 2 |
| B | 0 | 21221 | 2 |
| C | 0 | 17322 | 2 |
| D | 0 | 19168 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 22 | 0 |
| B | 0 | 22 | 0 |
| C | 0 | 22 | 0 |
| D | 0 | 22 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6883 | 97 | 1.409269% |
| B | 6884 | 181 | 2.629285% |
| C | 6884 | 238 | 3.457292% |
| D | 6884 | 177 | 2.571180% |
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 | 9153 | 6885 | 0 | 0 | 0.00% | 0.00% |  |
| B | 9154 | 6885 | 1 | 1 | 0.01% | 0.01% |  |
| C | 9154 | 6885 | 23 | 23 | 0.25% | 0.33% |  |
| D | 9154 | 6885 | 96 | 96 | 1.05% | 1.39% |  |
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 | 11307 | 53.16 | 986 | 970 | 194.4 |
| A | 3 | 137 | 9476 | 43.75 | 986 | 970 | 194.4 |
| A | 0 | 226 | 8403 | 38.23 | 986 | 970 | 194.4 |
| B | 6 | 159 | 1785036 | 9933.57 | 960 | 939 | 179.6 |
| B | 0 | 183 | 26224 | 140.78 | 960 | 939 | 179.6 |
| B | 12 | 111 | 21993 | 117.23 | 960 | 939 | 179.6 |
| C | 3 | 233 | 536344 | 2515.78 | 919 | 931 | 212.8 |
| C | 14 | 238 | 150943 | 704.87 | 919 | 931 | 212.8 |
| C | 0 | 10 | 61506 | 284.63 | 919 | 931 | 212.8 |
| D | 8 | 195 | 881340 | 4076.86 | 928 | 905 | 216.0 |
| D | 12 | 218 | 386285 | 1784.5 | 928 | 905 | 216.0 |
| D | 2 | 250 | 35349 | 159.49 | 928 | 905 | 216.0 |
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 |  |