Observation information
- date-obs: 2026-06-30
- time-obs: 13:25:53.537500000
- date-end: 2026-06-30
- time-end: 15:23:33.518300000
- obs_id: A14_042T02_9000006586
- exposure: 5144.81813139
- 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_58196cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58196cztM0_level2_quad_clean.evt
|
| Size (bytes) | 569,266,560 | 92,399,040 |
| Size | 542.9 MB
| 88.1 MB
|
| Events in quadrant A | 2,959,160 | 643,785 |
| Events in quadrant B | 6,000,099 | 624,042 |
| Events in quadrant C | 2,957,908 | 615,653 |
| Events in quadrant D | 8,641,141 | 452,992 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 5 | 0 |
| B | 0 | 5 | 0 |
| C | 0 | 5 | 0 |
| D | 0 | 5 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13727 | 1 |
| B | 0 | 22264 | 1 |
| C | 0 | 13886 | 1 |
| D | 0 | 30296 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6620 | 82 | 1.238671% |
| B | 6621 | 798 | 12.052560% |
| C | 6621 | 37 | 0.558828% |
| D | 6621 | 1699 | 25.660776% |
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 | 7060 | 6621 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7061 | 6622 | 540 | 540 | 7.65% | 8.15% |  |
| C | 7061 | 6622 | 10 | 10 | 0.14% | 0.15% |  |
| D | 7061 | 6622 | 1599 | 1599 | 22.65% | 24.15% |  |
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 | 35112 | 185.01 | 750 | 729 | 185.8 |
| A | 3 | 245 | 15446 | 79.19 | 750 | 729 | 185.8 |
| A | 11 | 3 | 10149 | 50.69 | 750 | 729 | 185.8 |
| B | 2 | 249 | 1585316 | 10399.14 | 704 | 677 | 152.4 |
| B | 10 | 128 | 1186028 | 7778.83 | 704 | 677 | 152.4 |
| B | 0 | 153 | 130189 | 849.92 | 704 | 677 | 152.4 |
| C | 6 | 223 | 44825 | 222.68 | 722 | 715 | 198.1 |
| C | 12 | 254 | 38511 | 190.8 | 722 | 715 | 198.1 |
| C | 12 | 252 | 23242 | 113.72 | 722 | 715 | 198.1 |
| D | 12 | 110 | 3952884 | 20929.29 | 664 | 637 | 188.8 |
| D | 8 | 160 | 1207665 | 6391.87 | 664 | 637 | 188.8 |
| D | 8 | 240 | 312838 | 1653.27 | 664 | 637 | 188.8 |
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 |  |