Observation information
- date-obs: 2026-06-28
- time-obs: 14:26:25.193000000
- date-end: 2026-06-28
- time-end: 16:35:08.998600000
- obs_id: A14_042T02_9000006586
- exposure: 4029.73214197
- 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_58167cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58167cztM0_level2_quad_clean.evt
|
| Size (bytes) | 865,926,720 | 93,499,200 |
| Size | 825.8 MB
| 89.2 MB
|
| Events in quadrant A | 3,507,282 | 724,683 |
| Events in quadrant B | 12,577,686 | 417,878 |
| Events in quadrant C | 3,454,499 | 688,495 |
| Events in quadrant D | 11,945,736 | 488,374 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
| 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 | 15669 | 1 |
| B | 0 | 42475 | 1 |
| C | 0 | 15752 | 1 |
| D | 0 | 40644 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7349 | 64 | 0.870867% |
| B | 7350 | 3646 | 49.605442% |
| C | 7350 | 46 | 0.625850% |
| D | 7349 | 2157 | 29.350932% |
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 | 7723 | 7349 | 4 | 4 | 0.05% | 0.05% |  |
| B | 7724 | 7349 | 3079 | 3079 | 39.86% | 41.90% |  |
| C | 7724 | 7349 | 19 | 19 | 0.25% | 0.26% |  |
| D | 7723 | 7348 | 2551 | 2551 | 33.03% | 34.72% |  |
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 | 14 | 125876 | 600.15 | 844 | 822 | 208.4 |
| A | 2 | 143 | 44922 | 211.64 | 844 | 822 | 208.4 |
| A | 4 | 3 | 23331 | 108.02 | 844 | 822 | 208.4 |
| B | 10 | 128 | 8561055 | 63350.81 | 631 | 608 | 135.1 |
| B | 2 | 249 | 763965 | 5649.15 | 631 | 608 | 135.1 |
| B | 10 | 247 | 114229 | 840.84 | 631 | 608 | 135.1 |
| C | 6 | 223 | 92176 | 410.45 | 813 | 805 | 222.6 |
| C | 14 | 254 | 53222 | 235.46 | 813 | 805 | 222.6 |
| C | 14 | 96 | 43185 | 190.37 | 813 | 805 | 222.6 |
| D | 12 | 110 | 6089098 | 28962.64 | 747 | 714 | 210.2 |
| D | 8 | 160 | 2096321 | 9968.87 | 747 | 714 | 210.2 |
| D | 2 | 31 | 202988 | 962.22 | 747 | 714 | 210.2 |
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 |  |