Observation information
- date-obs: 2025-06-08
- time-obs: 08:00:10.281300000
- date-end: 2025-06-08
- time-end: 10:01:58.261700000
- obs_id: A13_037T01_9000006476
- exposure: 4007.39650857
- 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_52442cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52442cztM0_level2_quad_clean.evt
|
| Size (bytes) | 784,707,840 | 83,747,520 |
| Size | 748.4 MB
| 79.9 MB
|
| Events in quadrant A | 3,276,189 | 625,903 |
| Events in quadrant B | 3,742,172 | 671,283 |
| Events in quadrant C | 9,667,517 | 429,888 |
| Events in quadrant D | 11,828,771 | 328,878 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14987 | 1 |
| B | 0 | 15935 | 1 |
| C | 0 | 33508 | 1 |
| D | 0 | 39936 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 140 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6878 | 227 | 3.300378% |
| B | 6879 | 248 | 3.605175% |
| C | 6879 | 2271 | 33.013519% |
| D | 6878 | 3122 | 45.391102% |
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 | 7308 | 6878 | 25 | 25 | 0.34% | 0.36% |  |
| B | 7309 | 6879 | 11 | 11 | 0.15% | 0.16% |  |
| C | 7309 | 6880 | 1940 | 1940 | 26.54% | 28.20% |  |
| D | 7308 | 6878 | 2917 | 2917 | 39.92% | 42.41% |  |
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 | 170562 | 942.42 | 730 | 712 | 180.2 |
| A | 5 | 240 | 72146 | 396.35 | 730 | 712 | 180.2 |
| A | 3 | 14 | 45450 | 248.23 | 730 | 712 | 180.2 |
| B | 10 | 254 | 431246 | 2763.13 | 718 | 692 | 155.8 |
| B | 0 | 213 | 83325 | 530.31 | 718 | 692 | 155.8 |
| B | 4 | 170 | 81620 | 519.37 | 718 | 692 | 155.8 |
| C | 15 | 224 | 4332988 | 26601.8 | 596 | 592 | 162.9 |
| C | 12 | 254 | 1167673 | 7166.12 | 596 | 592 | 162.9 |
| C | 15 | 248 | 562604 | 3450.87 | 596 | 592 | 162.9 |
| D | 12 | 17 | 3080415 | 19169.4 | 560 | 535 | 160.7 |
| D | 15 | 93 | 1814276 | 11288.86 | 560 | 535 | 160.7 |
| D | 12 | 2 | 1782437 | 11090.69 | 560 | 535 | 160.7 |
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 |  |