Observation information
- date-obs: 2025-06-09
- time-obs: 09:59:36.126800000
- date-end: 2025-06-09
- time-end: 12:01:35.991900000
- obs_id: A13_037T01_9000006476
- exposure: 432.172013283
- 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_52458cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52458cztM0_level2_quad_clean.evt
|
| Size (bytes) | 885,407,040 | 83,387,520 |
| Size | 844.4 MB
| 79.5 MB
|
| Events in quadrant A | 5,656,087 | 601,328 |
| Events in quadrant B | 3,648,820 | 743,483 |
| Events in quadrant C | 4,913,376 | 633,476 |
| Events in quadrant D | 17,988,117 | 36,886 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21886 | 0 |
| B | 0 | 15964 | 0 |
| C | 0 | 19631 | 0 |
| D | 0 | 58420 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 146 | 0 |
| B | 0 | 146 | 0 |
| C | 0 | 146 | 0 |
| D | 0 | 146 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7320 | 1068 | 14.590164% |
| B | 7321 | 23 | 0.314165% |
| C | 7321 | 266 | 3.633383% |
| D | 7321 | 6990 | 95.478760% |
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 | 7319 | 7319 | 885 | 885 | 12.09% | 12.09% |  |
| B | 7320 | 7320 | 9 | 9 | 0.12% | 0.12% |  |
| C | 7320 | 7320 | 260 | 260 | 3.55% | 3.55% |  |
| D | 7320 | 7320 | 6872 | 6872 | 93.88% | 93.88% |  |
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 | 4 | 61 | 2307558 | 12826.62 | 716 | 696 | 179.8 |
| A | 13 | 248 | 273238 | 1515.39 | 716 | 696 | 179.8 |
| A | 8 | 249 | 77197 | 425.36 | 716 | 696 | 179.8 |
| B | 4 | 81 | 310897 | 1863.48 | 772 | 745 | 166.4 |
| B | 4 | 171 | 87978 | 524.12 | 772 | 745 | 166.4 |
| B | 10 | 247 | 36093 | 212.38 | 772 | 745 | 166.4 |
| C | 13 | 3 | 575122 | 2839.85 | 740 | 732 | 202.3 |
| C | 15 | 231 | 544916 | 2690.5 | 740 | 732 | 202.3 |
| C | 2 | 12 | 457251 | 2257.08 | 740 | 732 | 202.3 |
| D | 15 | 93 | 15042004 | 200894.2 | 260 | 249 | 74.9 |
| D | 6 | 42 | 1434552 | 19156.22 | 260 | 249 | 74.9 |
| D | 2 | 136 | 196966 | 2627.31 | 260 | 249 | 74.9 |
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 |  |