Observation information
- date-obs: 2025-06-10
- time-obs: 01:42:39.850000000
- date-end: 2025-06-10
- time-end: 08:53:04.774700000
- obs_id: A13_037T01_9000006476
- exposure: 41.9434773922
- 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_52471cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52471cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,863,157,760 | 245,485,440 |
| Size | 2.7 GB
| 234.1 MB
|
| Events in quadrant A | 12,792,202 | 2,091,355 |
| Events in quadrant B | 14,658,899 | 2,191,213 |
| Events in quadrant C | 21,662,724 | 1,631,706 |
| Events in quadrant D | 55,169,971 | 3,460 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 40 | 0 |
| B | 0 | 40 | 0 |
| C | 0 | 40 | 0 |
| D | 0 | 40 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 53278 | 4 |
| B | 0 | 58928 | 4 |
| C | 0 | 80044 | 4 |
| D | 0 | 179070 | 11 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 446 | 0 |
| B | 0 | 446 | 0 |
| C | 0 | 446 | 0 |
| D | 0 | 446 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 22016 | 593 | 2.693496% |
| B | 22016 | 1378 | 6.259084% |
| C | 22016 | 4000 | 18.168605% |
| D | 22015 | 21985 | 99.863729% |
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 | 25826 | 22021 | 344 | 344 | 1.33% | 1.56% |  |
| B | 25826 | 22021 | 761 | 761 | 2.95% | 3.46% |  |
| C | 25825 | 22019 | 3387 | 3387 | 13.12% | 15.38% |  |
| D | 25824 | 22014 | 20217 | 20217 | 78.29% | 91.84% |  |
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 | 2202128 | 3806.88 | 2379 | 2322 | 577.9 |
| A | 3 | 14 | 311669 | 535.34 | 2379 | 2322 | 577.9 |
| A | 11 | 3 | 193017 | 330.01 | 2379 | 2322 | 577.9 |
| B | 10 | 44 | 1448271 | 2927.99 | 2325 | 2237 | 493.9 |
| B | 10 | 254 | 1428058 | 2887.06 | 2325 | 2237 | 493.9 |
| B | 4 | 81 | 764213 | 1542.88 | 2325 | 2237 | 493.9 |
| C | 15 | 224 | 8803314 | 15630.43 | 2072 | 2050 | 563.1 |
| C | 4 | 5 | 1068078 | 1893.19 | 2072 | 2050 | 563.1 |
| C | 13 | 3 | 1042434 | 1847.65 | 2072 | 2050 | 563.1 |
| D | 15 | 93 | 50396448 | 365546.67 | 467 | 446 | 137.9 |
| D | 6 | 42 | 1665951 | 12080.72 | 467 | 446 | 137.9 |
| D | 2 | 153 | 218971 | 1585.07 | 467 | 446 | 137.9 |
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 |  |