Observation information
- date-obs: 2026-06-24
- time-obs: 11:46:01.182000000
- date-end: 2026-06-24
- time-end: 13:48:21.998000000
- obs_id: A14_042T02_9000006586
- exposure: 4520.46058959
- 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_58106cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58106cztM0_level2_quad_clean.evt
|
| Size (bytes) | 569,064,960 | 90,449,280 |
| Size | 542.7 MB
| 86.3 MB
|
| Events in quadrant A | 3,174,837 | 641,324 |
| Events in quadrant B | 6,323,349 | 628,693 |
| Events in quadrant C | 2,816,766 | 606,708 |
| Events in quadrant D | 8,268,583 | 429,663 |
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 | 124 | 0 |
| B | 0 | 124 | 0 |
| C | 0 | 124 | 0 |
| D | 0 | 124 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13651 | 1 |
| B | 0 | 23158 | 1 |
| C | 0 | 12867 | 1 |
| D | 0 | 28783 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6201 | 140 | 2.257700% |
| B | 6201 | 713 | 11.498145% |
| C | 6201 | 74 | 1.193356% |
| D | 6201 | 1814 | 29.253346% |
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 | 7340 | 6200 | 59 | 59 | 0.80% | 0.95% |  |
| B | 7340 | 6200 | 468 | 468 | 6.38% | 7.55% |  |
| C | 7340 | 6200 | 2 | 2 | 0.03% | 0.03% |  |
| D | 7340 | 6200 | 1796 | 1796 | 24.47% | 28.97% |  |
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 | 10 | 251 | 318031 | 1783.96 | 722 | 702 | 177.9 |
| A | 4 | 3 | 11907 | 62.99 | 722 | 702 | 177.9 |
| A | 13 | 254 | 11273 | 59.43 | 722 | 702 | 177.9 |
| B | 10 | 128 | 3040085 | 20916.1 | 680 | 655 | 145.3 |
| B | 4 | 201 | 136760 | 936.62 | 680 | 655 | 145.3 |
| B | 5 | 185 | 124075 | 849.33 | 680 | 655 | 145.3 |
| C | 12 | 252 | 55433 | 288.01 | 693 | 685 | 190.1 |
| C | 12 | 250 | 17618 | 89.08 | 693 | 685 | 190.1 |
| C | 14 | 254 | 11631 | 57.58 | 693 | 685 | 190.1 |
| D | 12 | 110 | 5297953 | 29669.52 | 628 | 599 | 178.5 |
| D | 8 | 160 | 180143 | 1005.59 | 628 | 599 | 178.5 |
| D | 8 | 240 | 111234 | 619.64 | 628 | 599 | 178.5 |
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 |  |