Observation information
- date-obs: 2026-06-28
- time-obs: 04:02:16.125200000
- date-end: 2026-06-28
- time-end: 06:13:29.100700000
- obs_id: A14_042T02_9000006586
- exposure: 1975.64141405
- 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_58161cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58161cztM0_level2_quad_clean.evt
|
| Size (bytes) | 677,283,840 | 85,213,440 |
| Size | 645.9 MB
| 81.3 MB
|
| Events in quadrant A | 3,074,432 | 668,606 |
| Events in quadrant B | 14,506,754 | 211,456 |
| Events in quadrant C | 3,186,840 | 635,885 |
| Events in quadrant D | 3,772,642 | 589,453 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13984 | 2 |
| B | 0 | 47878 | 6 |
| C | 0 | 14376 | 2 |
| D | 0 | 15817 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6814 | 95 | 1.394188% |
| B | 6813 | 5081 | 74.578013% |
| C | 6813 | 104 | 1.526493% |
| D | 6813 | 171 | 2.509908% |
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 | 7789 | 6814 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7787 | 6812 | 4638 | 4638 | 59.56% | 68.09% |  |
| C | 7788 | 6813 | 16 | 16 | 0.21% | 0.23% |  |
| D | 7788 | 6813 | 86 | 86 | 1.10% | 1.26% |  |
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 | 4 | 3 | 18231 | 91.54 | 779 | 760 | 190.9 |
| A | 8 | 249 | 11872 | 58.22 | 779 | 760 | 190.9 |
| A | 3 | 245 | 11569 | 56.63 | 779 | 760 | 190.9 |
| B | 10 | 128 | 12522111 | 130974.65 | 445 | 429 | 95.6 |
| B | 5 | 185 | 57851 | 600.62 | 445 | 429 | 95.6 |
| B | 0 | 79 | 33768 | 348.72 | 445 | 429 | 95.6 |
| C | 12 | 252 | 71326 | 343.75 | 752 | 748 | 205.3 |
| C | 15 | 208 | 59733 | 287.29 | 752 | 748 | 205.3 |
| C | 14 | 254 | 35752 | 170.49 | 752 | 748 | 205.3 |
| D | 8 | 160 | 193580 | 921.41 | 745 | 712 | 209.3 |
| D | 2 | 249 | 116433 | 552.85 | 745 | 712 | 209.3 |
| D | 2 | 31 | 111153 | 527.62 | 745 | 712 | 209.3 |
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 |  |