Observation information
- date-obs: 2026-06-25
- time-obs: 06:28:56.829200000
- date-end: 2026-06-25
- time-end: 08:49:39.804100000
- obs_id: A14_042T02_9000006586
- exposure: 4746.98066819
- 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_58118cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58118cztM0_level2_quad_clean.evt
|
| Size (bytes) | 557,625,600 | 95,008,320 |
| Size | 531.8 MB
| 90.6 MB
|
| Events in quadrant A | 3,033,112 | 664,516 |
| Events in quadrant B | 4,502,572 | 691,353 |
| Events in quadrant C | 3,133,806 | 631,170 |
| Events in quadrant D | 9,464,379 | 433,946 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 20 | 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 | 13465 | 1 |
| B | 0 | 17595 | 1 |
| C | 0 | 13676 | 1 |
| D | 0 | 32716 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6538 | 86 | 1.315387% |
| B | 6538 | 378 | 5.781585% |
| C | 6538 | 90 | 1.376568% |
| D | 6538 | 1933 | 29.565616% |
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 | 7613 | 6539 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7613 | 6539 | 199 | 199 | 2.61% | 3.04% |  |
| C | 7613 | 6539 | 7 | 7 | 0.09% | 0.11% |  |
| D | 7613 | 6539 | 1814 | 1814 | 23.83% | 27.74% |  |
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 | 11 | 3 | 64490 | 342.65 | 757 | 739 | 186.1 |
| A | 10 | 251 | 14977 | 76.53 | 757 | 739 | 186.1 |
| A | 13 | 254 | 10612 | 53.06 | 757 | 739 | 186.1 |
| B | 10 | 128 | 933230 | 5929.0 | 731 | 704 | 157.3 |
| B | 5 | 172 | 376919 | 2391.97 | 731 | 704 | 157.3 |
| B | 5 | 185 | 72878 | 458.88 | 731 | 704 | 157.3 |
| C | 1 | 16 | 93716 | 464.92 | 734 | 727 | 200.0 |
| C | 13 | 3 | 81658 | 404.63 | 734 | 727 | 200.0 |
| C | 11 | 244 | 39056 | 191.63 | 734 | 727 | 200.0 |
| D | 12 | 110 | 6282347 | 33991.15 | 654 | 623 | 184.8 |
| D | 2 | 249 | 186362 | 1005.06 | 654 | 623 | 184.8 |
| D | 7 | 222 | 148452 | 799.92 | 654 | 623 | 184.8 |
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 |  |