Observation information
- date-obs: 2025-06-09
- time-obs: 22:19:22.886400000
- date-end: 2025-06-10
- time-end: 01:54:06.847800000
- obs_id: A13_037T01_9000006476
- exposure: 22.8176943064
- 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_52467cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52467cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,361,712,960 | 124,050,240 |
| Size | 1.3 GB
| 118.3 MB
|
| Events in quadrant A | 6,223,300 | 994,425 |
| Events in quadrant B | 7,135,861 | 1,093,351 |
| Events in quadrant C | 9,124,750 | 932,423 |
| Events in quadrant D | 27,102,021 | 1,819 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 23 | 0 |
| B | 0 | 23 | 0 |
| C | 0 | 23 | 0 |
| D | 0 | 23 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26402 | 2 |
| B | 0 | 28409 | 2 |
| C | 0 | 34542 | 2 |
| D | 0 | 87925 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 216 | 0 |
| B | 0 | 216 | 0 |
| C | 0 | 216 | 0 |
| D | 0 | 216 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 10599 | 403 | 3.802245% |
| B | 10600 | 325 | 3.066038% |
| C | 10600 | 701 | 6.613208% |
| D | 10599 | 10586 | 99.877347% |
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 | 12884 | 10601 | 366 | 366 | 2.84% | 3.45% |  |
| B | 12885 | 10602 | 227 | 227 | 1.76% | 2.14% |  |
| C | 12885 | 10601 | 633 | 633 | 4.91% | 5.97% |  |
| D | 12884 | 10601 | 9811 | 9811 | 76.15% | 92.55% |  |
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 | 1421157 | 5227.2 | 1105 | 1077 | 271.7 |
| A | 15 | 174 | 121574 | 443.54 | 1105 | 1077 | 271.7 |
| A | 13 | 248 | 111750 | 407.38 | 1105 | 1077 | 271.7 |
| B | 10 | 254 | 1323053 | 5574.31 | 1111 | 1070 | 237.2 |
| B | 0 | 213 | 414703 | 1744.14 | 1111 | 1070 | 237.2 |
| B | 4 | 171 | 252095 | 1058.48 | 1111 | 1070 | 237.2 |
| C | 15 | 224 | 2028102 | 6986.98 | 1063 | 1054 | 290.1 |
| C | 12 | 254 | 1199751 | 4131.76 | 1063 | 1054 | 290.1 |
| C | 13 | 3 | 519850 | 1788.22 | 1063 | 1054 | 290.1 |
| D | 15 | 93 | 24042913 | 323653.7 | 239 | 225 | 74.3 |
| D | 6 | 42 | 1345689 | 18112.13 | 239 | 225 | 74.3 |
| D | 12 | 17 | 130510 | 1753.85 | 239 | 225 | 74.3 |
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 |  |