Observation information
- date-obs: 2026-06-25
- time-obs: 18:56:24.704200000
- date-end: 2026-06-25
- time-end: 20:59:51.684300000
- obs_id: A14_042T02_9000006586
- exposure: 533.519521236
- 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_58125cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58125cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,022,503,680 | 80,115,840 |
| Size | 975.1 MB
| 76.4 MB
|
| Events in quadrant A | 3,827,286 | 690,526 |
| Events in quadrant B | 11,845,637 | 509,411 |
| Events in quadrant C | 3,803,847 | 663,841 |
| Events in quadrant D | 17,799,125 | 46,141 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16774 | 0 |
| B | 0 | 40290 | 0 |
| C | 0 | 16807 | 0 |
| D | 0 | 57706 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7407 | 248 | 3.348184% |
| B | 7407 | 2869 | 38.733630% |
| C | 7407 | 123 | 1.660591% |
| D | 7407 | 6973 | 94.140678% |
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 | 7407 | 7407 | 159 | 159 | 2.15% | 2.15% |  |
| B | 7407 | 7407 | 2458 | 2458 | 33.18% | 33.18% |  |
| C | 7407 | 7407 | 114 | 114 | 1.54% | 1.54% |  |
| D | 7407 | 7406 | 6443 | 6443 | 86.99% | 87.00% |  |
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 | 10 | 251 | 563276 | 2863.42 | 789 | 768 | 196.4 |
| A | 3 | 245 | 47940 | 240.13 | 789 | 768 | 196.4 |
| A | 2 | 79 | 43634 | 218.21 | 789 | 768 | 196.4 |
| B | 10 | 128 | 8258733 | 55816.52 | 680 | 652 | 148.0 |
| B | 5 | 172 | 335384 | 2262.46 | 680 | 652 | 148.0 |
| B | 2 | 249 | 201528 | 1357.72 | 680 | 652 | 148.0 |
| C | 15 | 208 | 430516 | 2039.04 | 766 | 762 | 210.8 |
| C | 6 | 223 | 211114 | 998.05 | 766 | 762 | 210.8 |
| C | 12 | 252 | 121341 | 572.11 | 766 | 762 | 210.8 |
| D | 12 | 110 | 15839795 | 139407.88 | 397 | 379 | 113.6 |
| D | 8 | 240 | 193535 | 1700.03 | 397 | 379 | 113.6 |
| D | 2 | 249 | 71401 | 625.09 | 397 | 379 | 113.6 |
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 |  |