Observation information
- date-obs: 2025-06-08
- time-obs: 14:51:42.214400000
- date-end: 2025-06-08
- time-end: 17:19:21.189300000
- obs_id: A13_037T01_9000006476
- exposure: 2485.31266963
- 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_52447cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52447cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,188,233,280 | 95,641,920 |
| Size | 1.1 GB
| 91.2 MB
|
| Events in quadrant A | 7,934,058 | 683,339 |
| Events in quadrant B | 5,237,089 | 829,353 |
| Events in quadrant C | 10,552,607 | 583,254 |
| Events in quadrant D | 19,599,189 | 204,012 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 29493 | 14 |
| B | 0 | 21539 | 14 |
| C | 0 | 37336 | 29 |
| D | 0 | 64246 | 171 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 176 | 0 |
| B | 0 | 176 | 0 |
| C | 0 | 176 | 0 |
| D | 0 | 176 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8579 | 1293 | 15.071687% |
| B | 8578 | 212 | 2.471439% |
| C | 8573 | 2025 | 23.620670% |
| D | 8561 | 6386 | 74.594089% |
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 | 8859 | 8582 | 1179 | 1179 | 13.31% | 13.74% |  |
| B | 8860 | 8584 | 55 | 55 | 0.62% | 0.64% |  |
| C | 8859 | 8579 | 1883 | 1883 | 21.26% | 21.95% |  |
| D | 8859 | 8564 | 6359 | 6359 | 71.78% | 74.25% |  |
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 | 249 | 2896125 | 13866.79 | 848 | 826 | 208.8 |
| A | 4 | 61 | 986149 | 4719.12 | 848 | 826 | 208.8 |
| A | 13 | 248 | 310106 | 1481.27 | 848 | 826 | 208.8 |
| B | 10 | 254 | 872555 | 4567.6 | 881 | 850 | 190.8 |
| B | 4 | 171 | 297378 | 1553.76 | 881 | 850 | 190.8 |
| B | 12 | 32 | 111606 | 580.34 | 881 | 850 | 190.8 |
| C | 15 | 231 | 3565353 | 16621.3 | 784 | 778 | 214.5 |
| C | 15 | 224 | 1201884 | 5600.65 | 784 | 778 | 214.5 |
| C | 15 | 248 | 611989 | 2850.02 | 784 | 778 | 214.5 |
| D | 2 | 153 | 7656179 | 51098.83 | 519 | 494 | 149.8 |
| D | 6 | 42 | 2938003 | 19606.77 | 519 | 494 | 149.8 |
| D | 12 | 17 | 2481389 | 16559.05 | 519 | 494 | 149.8 |
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 |  |