Observation information
- date-obs: 2025-06-09
- time-obs: 11:32:27.997000000
- date-end: 2025-06-09
- time-end: 13:45:40.976300000
- obs_id: A13_037T01_9000006476
- exposure: 99.5994656086
- 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_52459cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52459cztM0_level2_quad_clean.evt
|
| Size (bytes) | 881,778,240 | 91,967,040 |
| Size | 840.9 MB
| 87.7 MB
|
| Events in quadrant A | 4,602,499 | 728,365 |
| Events in quadrant B | 4,387,330 | 808,348 |
| Events in quadrant C | 5,633,750 | 683,909 |
| Events in quadrant D | 17,394,777 | 8,241 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19364 | 0 |
| B | 0 | 18534 | 0 |
| C | 0 | 22276 | 0 |
| D | 0 | 57180 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 160 | 0 |
| B | 0 | 160 | 0 |
| C | 0 | 160 | 0 |
| D | 0 | 160 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7993 | 324 | 4.053547% |
| B | 7993 | 48 | 0.600525% |
| C | 7993 | 372 | 4.654072% |
| D | 7993 | 7925 | 99.149256% |
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 | 7993 | 7993 | 299 | 299 | 3.74% | 3.74% |  |
| B | 7993 | 7993 | 28 | 28 | 0.35% | 0.35% |  |
| C | 7993 | 7993 | 332 | 332 | 4.15% | 4.15% |  |
| D | 7993 | 7993 | 5396 | 5396 | 67.51% | 67.51% |  |
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 | 468029 | 2190.43 | 854 | 831 | 213.3 |
| A | 13 | 248 | 380392 | 1779.55 | 854 | 831 | 213.3 |
| A | 12 | 17 | 90140 | 418.72 | 854 | 831 | 213.3 |
| B | 7 | 0 | 461781 | 2496.19 | 855 | 822 | 184.7 |
| B | 4 | 81 | 192554 | 1038.27 | 855 | 822 | 184.7 |
| B | 4 | 171 | 157537 | 848.65 | 855 | 822 | 184.7 |
| C | 2 | 12 | 418946 | 1876.31 | 816 | 813 | 222.8 |
| C | 15 | 231 | 333534 | 1493.03 | 816 | 813 | 222.8 |
| C | 4 | 5 | 297799 | 1332.68 | 816 | 813 | 222.8 |
| D | 15 | 93 | 15941598 | 400100.46 | 127 | 121 | 39.8 |
| D | 6 | 42 | 657908 | 16509.19 | 127 | 121 | 39.8 |
| D | 2 | 136 | 131393 | 3294.68 | 127 | 121 | 39.8 |
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 |  |