Observation information
- date-obs: 2026-06-27
- time-obs: 19:19:07.214900000
- date-end: 2026-06-27
- time-end: 21:35:00.193100000
- obs_id: A14_042T02_9000006586
- exposure: 3122.09679604
- 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_58155cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58155cztM0_level2_quad_clean.evt
|
| Size (bytes) | 803,695,680 | 101,854,080 |
| Size | 766.5 MB
| 97.1 MB
|
| Events in quadrant A | 3,555,026 | 782,462 |
| Events in quadrant B | 16,340,798 | 311,334 |
| Events in quadrant C | 4,445,911 | 736,993 |
| Events in quadrant D | 4,776,589 | 687,622 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 162 | 0 |
| B | 0 | 162 | 0 |
| C | 0 | 162 | 0 |
| D | 0 | 162 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16786 | 1 |
| B | 0 | 54204 | 2 |
| C | 0 | 18955 | 1 |
| D | 0 | 20021 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8139 | 26 | 0.319450% |
| B | 8138 | 5336 | 65.568936% |
| C | 8138 | 95 | 1.167363% |
| D | 8138 | 206 | 2.531334% |
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 | 8154 | 8140 | 5 | 5 | 0.06% | 0.06% |  |
| B | 8153 | 8138 | 4897 | 4897 | 60.06% | 60.17% |  |
| C | 8153 | 8139 | 87 | 87 | 1.07% | 1.07% |  |
| D | 8153 | 8139 | 175 | 175 | 2.15% | 2.15% |  |
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 | 3 | 245 | 31378 | 137.43 | 900 | 875 | 222.0 |
| A | 11 | 3 | 20023 | 86.27 | 900 | 875 | 222.0 |
| A | 13 | 254 | 13236 | 55.69 | 900 | 875 | 222.0 |
| B | 10 | 128 | 13136746 | 109692.74 | 554 | 535 | 119.8 |
| B | 2 | 249 | 460025 | 3836.93 | 554 | 535 | 119.8 |
| B | 10 | 247 | 249775 | 2081.26 | 554 | 535 | 119.8 |
| C | 12 | 254 | 500222 | 2092.33 | 865 | 857 | 238.7 |
| C | 12 | 252 | 266958 | 1114.96 | 865 | 857 | 238.7 |
| C | 14 | 96 | 128918 | 536.57 | 865 | 857 | 238.7 |
| D | 12 | 218 | 469402 | 1932.74 | 857 | 820 | 242.4 |
| D | 2 | 249 | 456563 | 1879.78 | 857 | 820 | 242.4 |
| D | 12 | 128 | 121595 | 498.15 | 857 | 820 | 242.4 |
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 |  |