Observation information
- date-obs: 2026-06-30
- time-obs: 04:37:26.627200000
- date-end: 2026-06-30
- time-end: 06:44:48.604300000
- obs_id: A14_042T02_9000006586
- exposure: 6164.52630365
- 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_58191cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58191cztM0_level2_quad_clean.evt
|
| Size (bytes) | 427,392,000 | 99,734,400 |
| Size | 407.6 MB
| 95.1 MB
|
| Events in quadrant A | 3,072,697 | 664,813 |
| Events in quadrant B | 5,042,330 | 687,082 |
| Events in quadrant C | 3,015,976 | 634,243 |
| Events in quadrant D | 4,178,183 | 575,184 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13630 | 1 |
| B | 0 | 19351 | 1 |
| C | 0 | 13663 | 1 |
| D | 0 | 16902 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6577 | 86 | 1.307587% |
| B | 6578 | 420 | 6.384919% |
| C | 6578 | 82 | 1.246580% |
| D | 6578 | 306 | 4.651870% |
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 | 7642 | 6578 | 2 | 2 | 0.03% | 0.03% |  |
| B | 7643 | 6579 | 212 | 212 | 2.77% | 3.22% |  |
| C | 7643 | 6579 | 7 | 7 | 0.09% | 0.11% |  |
| D | 7643 | 6579 | 198 | 198 | 2.59% | 3.01% |  |
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 | 42567 | 222.98 | 762 | 743 | 187.6 |
| A | 4 | 3 | 29436 | 152.98 | 762 | 743 | 187.6 |
| A | 13 | 248 | 22064 | 113.67 | 762 | 743 | 187.6 |
| B | 10 | 128 | 1627212 | 10277.07 | 737 | 710 | 158.3 |
| B | 4 | 201 | 202268 | 1273.55 | 737 | 710 | 158.3 |
| B | 0 | 63 | 77012 | 482.12 | 737 | 710 | 158.3 |
| C | 6 | 9 | 48102 | 234.94 | 742 | 735 | 201.6 |
| C | 12 | 252 | 24702 | 118.87 | 742 | 735 | 201.6 |
| C | 6 | 223 | 20566 | 98.36 | 742 | 735 | 201.6 |
| D | 8 | 160 | 525136 | 2580.85 | 723 | 690 | 203.2 |
| D | 8 | 240 | 325839 | 1600.09 | 723 | 690 | 203.2 |
| D | 6 | 239 | 141008 | 690.52 | 723 | 690 | 203.2 |
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 |  |