Observation information
- date-obs: 2026-07-01
- time-obs: 08:20:35.341300000
- date-end: 2026-07-01
- time-end: 10:28:04.319400000
- obs_id: A14_042T02_9000006586
- exposure: 5631.3468315
- 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_58208cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58208cztM0_level2_quad_clean.evt
|
| Size (bytes) | 463,737,600 | 98,280,000 |
| Size | 442.3 MB
| 93.7 MB
|
| Events in quadrant A | 3,145,202 | 665,692 |
| Events in quadrant B | 6,010,789 | 634,882 |
| Events in quadrant C | 3,298,494 | 631,390 |
| Events in quadrant D | 4,202,728 | 588,158 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 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 | 13927 | 2 |
| B | 0 | 22265 | 2 |
| C | 0 | 14419 | 2 |
| D | 0 | 16902 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6542 | 163 | 2.491593% |
| B | 6542 | 969 | 14.811984% |
| C | 6542 | 146 | 2.231733% |
| D | 6542 | 243 | 3.714460% |
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 | 7632 | 6542 | 32 | 32 | 0.42% | 0.49% |  |
| B | 7632 | 6542 | 699 | 699 | 9.16% | 10.68% |  |
| C | 7632 | 6542 | 19 | 19 | 0.25% | 0.29% |  |
| D | 7632 | 6542 | 124 | 124 | 1.62% | 1.90% |  |
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 | 13 | 248 | 103914 | 551.77 | 759 | 741 | 187.0 |
| A | 3 | 245 | 77620 | 411.15 | 759 | 741 | 187.0 |
| A | 4 | 3 | 15591 | 79.42 | 759 | 741 | 187.0 |
| B | 2 | 249 | 1745852 | 11563.21 | 705 | 678 | 150.9 |
| B | 10 | 128 | 895071 | 5926.08 | 705 | 678 | 150.9 |
| B | 10 | 247 | 159487 | 1052.24 | 705 | 678 | 150.9 |
| C | 15 | 208 | 196162 | 970.91 | 735 | 727 | 201.3 |
| C | 12 | 252 | 145897 | 721.2 | 735 | 727 | 201.3 |
| C | 6 | 223 | 36851 | 179.46 | 735 | 727 | 201.3 |
| D | 12 | 110 | 663554 | 3230.46 | 731 | 699 | 205.2 |
| D | 8 | 160 | 196849 | 955.95 | 731 | 699 | 205.2 |
| D | 12 | 248 | 99742 | 482.69 | 731 | 699 | 205.2 |
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 |  |