Observation information
- date-obs: 2026-07-17
- time-obs: 00:33:52.341400000
- date-end: 2026-07-17
- time-end: 02:42:29.326300000
- obs_id: A14_045T01_9000006590
- exposure: 6110.07167804
- 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_58441cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58441cztM0_level2_quad_clean.evt
|
| Size (bytes) | 418,691,520 | 98,375,040 |
| Size | 399.3 MB
| 93.8 MB
|
| Events in quadrant A | 3,453,258 | 646,096 |
| Events in quadrant B | 3,432,296 | 698,181 |
| Events in quadrant C | 4,396,374 | 599,567 |
| Events in quadrant D | 3,709,378 | 580,129 |
Level1 data integrity
| 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 | 14747 | 2 |
| B | 0 | 14571 | 2 |
| C | 0 | 17618 | 3 |
| D | 0 | 15672 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6518 | 156 | 2.393372% |
| B | 6518 | 212 | 3.252531% |
| C | 6517 | 440 | 6.751573% |
| D | 6517 | 131 | 2.010127% |
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 | 7638 | 6519 | 65 | 65 | 0.85% | 1.00% |  |
| B | 7638 | 6519 | 73 | 73 | 0.96% | 1.12% |  |
| C | 7637 | 6518 | 312 | 312 | 4.09% | 4.79% |  |
| D | 7637 | 6518 | 70 | 70 | 0.92% | 1.07% |  |
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 | 62 | 354650 | 1908.08 | 753 | 734 | 185.5 |
| A | 12 | 114 | 53751 | 285.83 | 753 | 734 | 185.5 |
| A | 10 | 251 | 41637 | 220.52 | 753 | 734 | 185.5 |
| B | 4 | 201 | 170158 | 1053.58 | 745 | 719 | 160.8 |
| B | 10 | 246 | 71915 | 442.7 | 745 | 719 | 160.8 |
| B | 8 | 128 | 50273 | 308.13 | 745 | 719 | 160.8 |
| C | 1 | 12 | 1064907 | 5439.98 | 713 | 709 | 195.6 |
| C | 12 | 249 | 160741 | 818.05 | 713 | 709 | 195.6 |
| C | 14 | 245 | 137633 | 699.93 | 713 | 709 | 195.6 |
| D | 8 | 240 | 369984 | 1787.41 | 720 | 688 | 206.6 |
| D | 2 | 249 | 112603 | 541.67 | 720 | 688 | 206.6 |
| D | 12 | 248 | 97680 | 469.45 | 720 | 688 | 206.6 |
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 |  |