Observation information
- date-obs: 2026-06-27
- time-obs: 07:16:25.333800000
- date-end: 2026-06-27
- time-end: 09:23:06.310900000
- obs_id: A14_042T02_9000006586
- exposure: 1733.61554241
- 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_58148cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58148cztM0_level2_quad_clean.evt
|
| Size (bytes) | 856,759,680 | 77,685,120 |
| Size | 817.1 MB
| 74.1 MB
|
| Events in quadrant A | 3,050,584 | 672,591 |
| Events in quadrant B | 14,150,399 | 207,555 |
| Events in quadrant C | 3,053,965 | 637,862 |
| Events in quadrant D | 10,958,916 | 383,654 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13369 | 2 |
| B | 0 | 46579 | 1 |
| C | 0 | 13558 | 1 |
| D | 0 | 37014 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6460 | 72 | 1.114551% |
| B | 6461 | 4910 | 75.994428% |
| C | 6461 | 59 | 0.913171% |
| D | 6461 | 2643 | 40.906980% |
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 | 7600 | 6460 | 10 | 10 | 0.13% | 0.15% |  |
| B | 7601 | 6461 | 4458 | 4458 | 58.65% | 69.00% |  |
| C | 7601 | 6461 | 5 | 5 | 0.07% | 0.08% |  |
| D | 7600 | 6460 | 2483 | 2483 | 32.67% | 38.44% |  |
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 | 53972 | 285.06 | 762 | 744 | 186.7 |
| A | 3 | 245 | 38298 | 201.12 | 762 | 744 | 186.7 |
| A | 3 | 137 | 9182 | 45.19 | 762 | 744 | 186.7 |
| B | 10 | 128 | 12387439 | 151434.34 | 377 | 364 | 81.8 |
| B | 0 | 63 | 65343 | 794.38 | 377 | 364 | 81.8 |
| B | 0 | 79 | 60693 | 737.53 | 377 | 364 | 81.8 |
| C | 12 | 252 | 106738 | 525.13 | 735 | 729 | 201.9 |
| C | 6 | 223 | 43201 | 210.39 | 735 | 729 | 201.9 |
| C | 14 | 254 | 13727 | 64.39 | 735 | 729 | 201.9 |
| D | 12 | 110 | 6815925 | 38450.3 | 632 | 606 | 177.3 |
| D | 8 | 160 | 1184557 | 6679.55 | 632 | 606 | 177.3 |
| D | 3 | 224 | 207156 | 1165.3 | 632 | 606 | 177.3 |
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 |  |