Observation information
- date-obs: 2026-06-26
- time-obs: 08:32:16.563000000
- date-end: 2026-06-26
- time-end: 10:49:08.539600000
- obs_id: A14_042T02_9000006586
- exposure: 5834.51566726
- sourceid: NGC4038
- observer: pshalima
- ra_pnt: 180.4708
- dec_pnt: -18.86759
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_042T02_9000006586_58134cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58134cztM0_level2_quad_clean.evt
|
| Size (bytes) | 449,982,720 | 99,276,480 |
| Size | 429.1 MB
| 94.7 MB
|
| Events in quadrant A | 3,092,596 | 672,117 |
| Events in quadrant B | 4,802,695 | 671,012 |
| Events in quadrant C | 3,408,996 | 635,333 |
| Events in quadrant D | 4,856,731 | 582,159 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13301 | 2 |
| B | 0 | 18420 | 2 |
| C | 0 | 14354 | 2 |
| D | 0 | 18738 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6380 | 90 | 1.410658% |
| B | 6380 | 560 | 8.777429% |
| C | 6380 | 90 | 1.410658% |
| D | 6380 | 329 | 5.156740% |
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 | 7565 | 6381 | 6 | 6 | 0.08% | 0.09% |  |
| B | 7565 | 6381 | 361 | 361 | 4.77% | 5.66% |  |
| C | 7565 | 6381 | 33 | 33 | 0.44% | 0.52% |  |
| D | 7565 | 6381 | 263 | 263 | 3.48% | 4.12% |  |
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 | 11 | 3 | 96605 | 516.26 | 757 | 737 | 185.7 |
| A | 10 | 251 | 22454 | 116.95 | 757 | 737 | 185.7 |
| A | 3 | 14 | 12500 | 63.34 | 757 | 737 | 185.7 |
| B | 10 | 128 | 1422209 | 9213.9 | 713 | 686 | 154.3 |
| B | 5 | 172 | 369138 | 2388.2 | 713 | 686 | 154.3 |
| B | 5 | 185 | 57102 | 365.67 | 713 | 686 | 154.3 |
| C | 12 | 252 | 351799 | 1759.24 | 728 | 720 | 199.6 |
| C | 6 | 223 | 71099 | 352.67 | 728 | 720 | 199.6 |
| C | 13 | 3 | 66682 | 330.53 | 728 | 720 | 199.6 |
| D | 12 | 110 | 804057 | 3904.84 | 722 | 691 | 205.7 |
| D | 8 | 160 | 778145 | 3778.89 | 722 | 691 | 205.7 |
| D | 7 | 222 | 238022 | 1153.57 | 722 | 691 | 205.7 |
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 |  |