Observation information
- date-obs: 2026-06-23
- time-obs: 09:30:37.279700000
- date-end: 2026-06-23
- time-end: 11:48:07.257000000
- obs_id: A14_042T02_9000006586
- exposure: 4431.42634624
- 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_58090cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58090cztM0_level2_quad_clean.evt
|
| Size (bytes) | 656,216,640 | 94,962,240 |
| Size | 625.8 MB
| 90.6 MB
|
| Events in quadrant A | 3,119,715 | 699,026 |
| Events in quadrant B | 10,373,789 | 507,530 |
| Events in quadrant C | 3,355,321 | 658,662 |
| Events in quadrant D | 6,927,944 | 547,484 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 136 | 0 |
| B | 0 | 136 | 0 |
| C | 0 | 136 | 0 |
| D | 0 | 136 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13749 | 2 |
| B | 0 | 35455 | 2 |
| C | 0 | 14519 | 2 |
| D | 0 | 25122 | 7 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6632 | 100 | 1.507841% |
| B | 6632 | 2595 | 39.128468% |
| C | 6632 | 102 | 1.537998% |
| D | 6631 | 927 | 13.979792% |
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 | 7782 | 6632 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7782 | 6632 | 1960 | 1960 | 25.19% | 29.55% |  |
| C | 7782 | 6632 | 16 | 16 | 0.21% | 0.24% |  |
| D | 7781 | 6631 | 784 | 784 | 10.08% | 11.82% |  |
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 | 61 | 22224 | 110.59 | 792 | 773 | 194.0 |
| A | 13 | 248 | 21515 | 106.94 | 792 | 773 | 194.0 |
| A | 13 | 254 | 9540 | 45.2 | 792 | 773 | 194.0 |
| B | 10 | 128 | 6527695 | 44495.29 | 684 | 658 | 146.7 |
| B | 5 | 172 | 797013 | 5428.81 | 684 | 658 | 146.7 |
| B | 0 | 156 | 100909 | 683.42 | 684 | 658 | 146.7 |
| C | 6 | 223 | 173286 | 826.61 | 759 | 750 | 208.7 |
| C | 15 | 208 | 117609 | 559.86 | 759 | 750 | 208.7 |
| C | 12 | 252 | 59080 | 279.45 | 759 | 750 | 208.7 |
| D | 12 | 110 | 2893742 | 13847.22 | 738 | 706 | 208.9 |
| D | 8 | 160 | 369558 | 1765.47 | 738 | 706 | 208.9 |
| D | 3 | 224 | 237907 | 1135.34 | 738 | 706 | 208.9 |
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 |  |