Observation information
- date-obs: 2025-06-11
- time-obs: 03:44:15.580900000
- date-end: 2025-06-11
- time-end: 04:41:30.571500000
- obs_id: A13_037T01_9000006476
- exposure: 44.4716262221
- 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_52484cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52484cztM0_level2_quad_clean.evt
|
| Size (bytes) | 444,623,040 | 37,198,080 |
| Size | 424.0 MB
| 35.5 MB
|
| Events in quadrant A | 1,700,276 | 302,101 |
| Events in quadrant B | 3,676,234 | 313,574 |
| Events in quadrant C | 2,348,852 | 275,484 |
| Events in quadrant D | 8,478,638 | 3,571 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 7677 | 302 |
| B | 0 | 13420 | 266 |
| C | 0 | 10095 | 711 |
| D | 0 | 28926 | 1479 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 68 | 2 |
| B | 0 | 68 | 4 |
| C | 0 | 68 | 2 |
| D | 0 | 66 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 3280 | 38 | 1.158537% |
| B | 3277 | 309 | 9.429356% |
| C | 3261 | 194 | 5.949095% |
| D | 3225 | 3195 | 99.069767% |
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 | 3348 | 3309 | 39 | 39 | 1.16% | 1.18% |  |
| B | 3370 | 3317 | 358 | 358 | 10.62% | 10.79% |  |
| C | 3328 | 3292 | 184 | 184 | 5.53% | 5.59% |  |
| D | 3309 | 3225 | 3093 | 3093 | 93.47% | 95.91% |  |
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 | 305770 | 3677.71 | 330 | 322 | 83.1 |
| A | 11 | 3 | 65852 | 789.01 | 330 | 322 | 83.1 |
| A | 7 | 206 | 13591 | 159.76 | 330 | 322 | 83.1 |
| B | 10 | 254 | 2318163 | 32897.22 | 322 | 311 | 70.5 |
| B | 4 | 81 | 30733 | 431.78 | 322 | 311 | 70.5 |
| B | 0 | 171 | 14565 | 202.31 | 322 | 311 | 70.5 |
| C | 2 | 12 | 664558 | 7853.9 | 306 | 304 | 84.6 |
| C | 4 | 5 | 173176 | 2043.98 | 306 | 304 | 84.6 |
| C | 15 | 224 | 125182 | 1476.51 | 306 | 304 | 84.6 |
| D | 15 | 93 | 7551598 | 218190.22 | 115 | 109 | 34.6 |
| D | 6 | 42 | 412339 | 11910.84 | 115 | 109 | 34.6 |
| D | 2 | 252 | 11733 | 335.86 | 115 | 109 | 34.6 |
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 |  |