Observation information
- date-obs: 2026-07-16
- time-obs: 08:55:09.471000000
- date-end: 2026-07-16
- time-end: 11:10:14.455600000
- obs_id: A14_045T01_9000006590
- exposure: 7519.64600688
- 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_58431cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58431cztM0_level2_quad_clean.evt
|
| Size (bytes) | 557,544,960 | 117,002,880 |
| Size | 531.7 MB
| 111.6 MB
|
| Events in quadrant A | 3,728,116 | 773,012 |
| Events in quadrant B | 7,868,043 | 783,828 |
| Events in quadrant C | 4,166,920 | 731,806 |
| Events in quadrant D | 4,246,605 | 690,609 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 162 | 0 |
| B | 0 | 162 | 0 |
| C | 0 | 162 | 0 |
| D | 0 | 162 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16920 | 0 |
| B | 0 | 29026 | 0 |
| C | 0 | 18319 | 1 |
| D | 0 | 18267 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8105 | 21 | 0.259099% |
| B | 8105 | 755 | 9.315238% |
| C | 8104 | 132 | 1.628825% |
| D | 8105 | 89 | 1.098088% |
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 | 8105 | 8105 | 6 | 6 | 0.07% | 0.07% |  |
| B | 8105 | 8105 | 455 | 455 | 5.61% | 5.61% |  |
| C | 8104 | 8104 | 98 | 98 | 1.21% | 1.21% |  |
| D | 8105 | 8105 | 78 | 78 | 0.96% | 0.96% |  |
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 | 14 | 52840 | 228.65 | 914 | 889 | 227.2 |
| A | 10 | 251 | 36810 | 158.1 | 914 | 889 | 227.2 |
| A | 4 | 159 | 29466 | 125.78 | 914 | 889 | 227.2 |
| B | 5 | 172 | 3806724 | 19991.67 | 879 | 847 | 190.4 |
| B | 4 | 201 | 254361 | 1331.67 | 879 | 847 | 190.4 |
| B | 4 | 171 | 102938 | 536.27 | 879 | 847 | 190.4 |
| C | 15 | 147 | 254941 | 1057.57 | 877 | 870 | 240.2 |
| C | 6 | 223 | 104562 | 431.62 | 877 | 870 | 240.2 |
| C | 14 | 245 | 92484 | 381.34 | 877 | 870 | 240.2 |
| D | 8 | 240 | 268093 | 1075.82 | 880 | 842 | 248.4 |
| D | 2 | 249 | 100954 | 403.0 | 880 | 842 | 248.4 |
| D | 2 | 120 | 74048 | 294.69 | 880 | 842 | 248.4 |
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 |  |