Observation information
- date-obs: 2026-06-29
- time-obs: 14:42:51.771500000
- date-end: 2026-06-29
- time-end: 16:51:45.751000000
- obs_id: A14_042T02_9000006586
- exposure: 5665.43026012
- 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_58182cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58182cztM0_level2_quad_clean.evt
|
| Size (bytes) | 721,068,480 | 104,935,680 |
| Size | 687.7 MB
| 100.1 MB
|
| Events in quadrant A | 3,556,185 | 757,779 |
| Events in quadrant B | 8,234,765 | 679,091 |
| Events in quadrant C | 4,038,892 | 714,963 |
| Events in quadrant D | 10,264,506 | 489,903 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1 | 0 |
| B | 0 | 1 | 0 |
| C | 0 | 1 | 0 |
| D | 0 | 1 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 154 | 0 |
| B | 0 | 154 | 0 |
| C | 0 | 154 | 0 |
| D | 0 | 154 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16198 | 0 |
| B | 0 | 29793 | 0 |
| C | 0 | 17664 | 0 |
| D | 0 | 35859 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7704 | 53 | 0.687954% |
| B | 7704 | 1462 | 18.977155% |
| C | 7704 | 122 | 1.583593% |
| D | 7704 | 2204 | 28.608515% |
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 | 7734 | 7705 | 5 | 5 | 0.06% | 0.06% |  |
| B | 7734 | 7705 | 990 | 990 | 12.80% | 12.85% |  |
| C | 7734 | 7705 | 73 | 73 | 0.94% | 0.95% |  |
| D | 7734 | 7705 | 1823 | 1823 | 23.57% | 23.66% |  |
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 | 245 | 28469 | 126.08 | 890 | 866 | 218.9 |
| A | 4 | 3 | 24891 | 109.73 | 890 | 866 | 218.9 |
| A | 11 | 3 | 22748 | 99.95 | 890 | 866 | 218.9 |
| B | 10 | 128 | 2667750 | 15174.57 | 817 | 787 | 175.8 |
| B | 2 | 249 | 1946789 | 11072.42 | 817 | 787 | 175.8 |
| B | 4 | 201 | 135136 | 764.42 | 817 | 787 | 175.8 |
| C | 14 | 245 | 356990 | 1523.82 | 856 | 848 | 233.7 |
| C | 12 | 250 | 112422 | 477.39 | 856 | 848 | 233.7 |
| C | 12 | 252 | 96180 | 407.9 | 856 | 848 | 233.7 |
| D | 12 | 110 | 4806241 | 23037.57 | 738 | 708 | 208.6 |
| D | 8 | 160 | 1525790 | 7311.19 | 738 | 708 | 208.6 |
| D | 8 | 240 | 300258 | 1436.03 | 738 | 708 | 208.6 |
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 |  |