Observation information
- date-obs: 2026-07-15
- time-obs: 10:32:03.647800000
- date-end: 2026-07-15
- time-end: 15:21:35.612300000
- obs_id: A14_045T01_9000006590
- exposure: 13706.077885
- sourceid: NGC 4383
- observer: ujjwalkrishnan
- ra_pnt: 186.3563
- dec_pnt: 16.47013
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_045T01_9000006590_58419cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58419cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,473,151,680 | 224,352,000 |
| Size | 1.4 GB
| 214.0 MB
|
| Events in quadrant A | 11,131,896 | 1,466,274 |
| Events in quadrant B | 11,623,943 | 1,558,605 |
| Events in quadrant C | 19,585,577 | 1,190,230 |
| Events in quadrant D | 10,878,055 | 1,406,189 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 342 | 0 |
| B | 0 | 342 | 0 |
| C | 0 | 342 | 0 |
| D | 0 | 342 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 44951 | 1 |
| B | 0 | 46453 | 1 |
| C | 0 | 69928 | 1 |
| D | 0 | 43806 | 3 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 4 | 0 |
| B | 0 | 4 | 0 |
| C | 0 | 4 | 0 |
| D | 0 | 4 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 16973 | 1171 | 6.899193% |
| B | 16973 | 1556 | 9.167501% |
| C | 16973 | 3742 | 22.046780% |
| D | 16972 | 539 | 3.175819% |
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 | 17373 | 16974 | 648 | 648 | 3.73% | 3.82% |  |
| B | 17373 | 16974 | 908 | 908 | 5.23% | 5.35% |  |
| C | 17373 | 16974 | 2903 | 2903 | 16.71% | 17.10% |  |
| D | 17372 | 16973 | 468 | 468 | 2.69% | 2.76% |  |
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 | 10 | 248 | 1485556 | 3307.5 | 1805 | 1759 | 448.6 |
| A | 3 | 14 | 872032 | 1939.91 | 1805 | 1759 | 448.6 |
| A | 15 | 233 | 658950 | 1464.93 | 1805 | 1759 | 448.6 |
| B | 4 | 201 | 1074597 | 2805.54 | 1780 | 1715 | 382.4 |
| B | 2 | 249 | 964132 | 2516.68 | 1780 | 1715 | 382.4 |
| B | 4 | 158 | 588690 | 1534.92 | 1780 | 1715 | 382.4 |
| C | 9 | 38 | 6852101 | 15181.78 | 1649 | 1638 | 451.2 |
| C | 5 | 10 | 2281653 | 5052.9 | 1649 | 1638 | 451.2 |
| C | 15 | 147 | 2239982 | 4960.55 | 1649 | 1638 | 451.2 |
| D | 8 | 240 | 1843074 | 3612.13 | 1790 | 1711 | 509.8 |
| D | 2 | 249 | 647481 | 1266.78 | 1790 | 1711 | 509.8 |
| D | 11 | 129 | 344834 | 673.09 | 1790 | 1711 | 509.8 |
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 |  |