Observation information
- date-obs: 2025-06-11
- time-obs: 10:26:51.512900000
- date-end: 2025-06-11
- time-end: 12:37:56.490800000
- obs_id: A13_037T01_9000006476
- exposure: 35.2433030605
- sourceid: Cygnus X-2
- observer: ranjeev
- ra_pnt: 326.1714
- dec_pnt: 38.32141
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A13_037T01_9000006476_52488cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52488cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,057,412,160 | 82,897,920 |
| Size | 1008.4 MB
| 79.1 MB
|
| Events in quadrant A | 4,806,556 | 700,721 |
| Events in quadrant B | 4,061,909 | 781,980 |
| Events in quadrant C | 10,089,321 | 482,490 |
| Events in quadrant D | 19,581,236 | 2,800 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19815 | 86 |
| B | 0 | 17578 | 92 |
| C | 0 | 35707 | 333 |
| D | 0 | 64669 | 1124 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 158 | 0 |
| B | 0 | 158 | 0 |
| C | 0 | 158 | 0 |
| D | 0 | 158 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7818 | 336 | 4.297774% |
| B | 7809 | 88 | 1.126905% |
| C | 7777 | 2481 | 31.901762% |
| D | 7714 | 7689 | 99.675914% |
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 | 7866 | 7853 | 221 | 221 | 2.81% | 2.81% |  |
| B | 7866 | 7845 | 55 | 55 | 0.70% | 0.70% |  |
| C | 7865 | 7833 | 1953 | 1953 | 24.83% | 24.93% |  |
| D | 7864 | 7731 | 7403 | 7403 | 94.14% | 95.76% |  |
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 | 8 | 26 | 710149 | 3451.9 | 829 | 807 | 205.5 |
| A | 3 | 45 | 212118 | 1028.31 | 829 | 807 | 205.5 |
| A | 13 | 248 | 128980 | 623.73 | 829 | 807 | 205.5 |
| B | 10 | 44 | 191134 | 1054.4 | 828 | 799 | 180.5 |
| B | 10 | 254 | 150985 | 831.99 | 828 | 799 | 180.5 |
| B | 10 | 247 | 134116 | 738.54 | 828 | 799 | 180.5 |
| C | 15 | 224 | 5627796 | 31317.22 | 660 | 657 | 179.7 |
| C | 15 | 231 | 530017 | 2946.09 | 660 | 657 | 179.7 |
| C | 2 | 12 | 323442 | 1796.42 | 660 | 657 | 179.7 |
| D | 15 | 93 | 18024469 | 315605.5 | 196 | 187 | 57.1 |
| D | 6 | 42 | 479974 | 8401.08 | 196 | 187 | 57.1 |
| D | 12 | 17 | 59546 | 1039.38 | 196 | 187 | 57.1 |
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 |  |