Observation information
- date-obs: 2025-06-08
- time-obs: 06:19:55.298300000
- date-end: 2025-06-08
- time-end: 08:17:23.278600000
- obs_id: A13_037T01_9000006476
- exposure: 4079.60088336
- 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_52441cztM0_level2.fits
| modeM0/AS1A13_037T01_9000006476_52441cztM0_level2_quad_clean.evt
|
| Size (bytes) | 691,418,880 | 77,656,320 |
| Size | 659.4 MB
| 74.1 MB
|
| Events in quadrant A | 2,743,018 | 574,206 |
| Events in quadrant B | 3,842,030 | 601,989 |
| Events in quadrant C | 10,174,837 | 359,214 |
| Events in quadrant D | 8,357,382 | 385,969 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12931 | 1 |
| B | 0 | 15745 | 1 |
| C | 0 | 34499 | 2 |
| D | 0 | 29117 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6153 | 87 | 1.413944% |
| B | 6154 | 256 | 4.159896% |
| C | 6153 | 2465 | 40.061758% |
| D | 6153 | 1651 | 26.832439% |
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 | 7048 | 6154 | 13 | 13 | 0.18% | 0.21% |  |
| B | 7049 | 6155 | 85 | 85 | 1.21% | 1.38% |  |
| C | 7048 | 6153 | 2201 | 2201 | 31.23% | 35.77% |  |
| D | 7048 | 6153 | 1591 | 1591 | 22.57% | 25.86% |  |
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 | 5 | 240 | 77300 | 474.96 | 649 | 631 | 161.4 |
| A | 3 | 14 | 31271 | 189.81 | 649 | 631 | 161.4 |
| A | 15 | 174 | 24141 | 145.64 | 649 | 631 | 161.4 |
| B | 10 | 254 | 451045 | 3300.65 | 633 | 611 | 136.5 |
| B | 0 | 171 | 338118 | 2473.15 | 633 | 611 | 136.5 |
| B | 4 | 171 | 116383 | 848.34 | 633 | 611 | 136.5 |
| C | 15 | 224 | 6032217 | 42529.23 | 510 | 505 | 141.8 |
| C | 15 | 231 | 543825 | 3830.92 | 510 | 505 | 141.8 |
| C | 12 | 254 | 493955 | 3479.29 | 510 | 505 | 141.8 |
| D | 12 | 17 | 1970429 | 13228.16 | 524 | 501 | 148.9 |
| D | 15 | 93 | 1578698 | 10597.66 | 524 | 501 | 148.9 |
| D | 12 | 2 | 1288300 | 8647.63 | 524 | 501 | 148.9 |
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 |  |