Observation information
- date-obs: 2026-06-26
- time-obs: 05:02:16.601000000
- date-end: 2026-06-26
- time-end: 07:22:30.575500000
- obs_id: A14_042T02_9000006586
- exposure: 6045.90019494
- 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_58132cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58132cztM0_level2_quad_clean.evt
|
| Size (bytes) | 455,604,480 | 98,461,440 |
| Size | 434.5 MB
| 93.9 MB
|
| Events in quadrant A | 3,202,113 | 659,627 |
| Events in quadrant B | 4,416,626 | 689,493 |
| Events in quadrant C | 3,289,430 | 624,158 |
| Events in quadrant D | 5,440,478 | 544,766 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 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 | 13882 | 2 |
| B | 0 | 17519 | 2 |
| C | 0 | 14539 | 2 |
| D | 0 | 20617 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6643 | 81 | 1.219329% |
| B | 6643 | 326 | 4.907421% |
| C | 6643 | 97 | 1.460184% |
| D | 6643 | 622 | 9.363240% |
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 | 7663 | 6644 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7663 | 6643 | 104 | 104 | 1.36% | 1.57% |  |
| C | 7663 | 6644 | 20 | 20 | 0.26% | 0.30% |  |
| D | 7663 | 6644 | 471 | 471 | 6.15% | 7.09% |  |
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 | 210426 | 1120.14 | 757 | 738 | 187.2 |
| A | 10 | 251 | 35569 | 186.07 | 757 | 738 | 187.2 |
| A | 4 | 3 | 13127 | 66.18 | 757 | 738 | 187.2 |
| B | 10 | 128 | 1117407 | 7119.68 | 735 | 708 | 156.8 |
| B | 5 | 185 | 213006 | 1353.54 | 735 | 708 | 156.8 |
| B | 7 | 252 | 32726 | 204.14 | 735 | 708 | 156.8 |
| C | 12 | 252 | 245383 | 1217.78 | 733 | 725 | 200.9 |
| C | 13 | 3 | 111815 | 552.95 | 733 | 725 | 200.9 |
| C | 14 | 246 | 20328 | 97.57 | 733 | 725 | 200.9 |
| D | 12 | 110 | 1279160 | 6480.91 | 703 | 672 | 197.3 |
| D | 8 | 160 | 908065 | 4599.75 | 703 | 672 | 197.3 |
| D | 3 | 224 | 230861 | 1166.87 | 703 | 672 | 197.3 |
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 |  |