Observation information
- date-obs: 2026-07-12
- time-obs: 21:40:33.125900000
- date-end: 2026-07-12
- time-end: 23:53:27.081700000
- obs_id: A14_045T01_9000006590
- exposure: 5745.26553875
- 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_58380cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58380cztM0_level2_quad_clean.evt
|
| Size (bytes) | 464,333,760 | 95,679,360 |
| Size | 442.8 MB
| 91.2 MB
|
| Events in quadrant A | 3,191,256 | 647,079 |
| Events in quadrant B | 5,896,791 | 630,760 |
| Events in quadrant C | 3,908,268 | 596,835 |
| Events in quadrant D | 3,690,748 | 572,654 |
Level1 data integrity
| 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 | 13991 | 2 |
| B | 0 | 21911 | 2 |
| C | 0 | 16301 | 2 |
| D | 0 | 15376 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6444 | 60 | 0.931099% |
| B | 6444 | 781 | 12.119801% |
| C | 6443 | 300 | 4.656216% |
| D | 6443 | 124 | 1.924569% |
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 | 7594 | 6444 | 22 | 22 | 0.29% | 0.34% |  |
| B | 7594 | 6444 | 626 | 626 | 8.24% | 9.71% |  |
| C | 7593 | 6444 | 301 | 301 | 3.96% | 4.67% |  |
| D | 7593 | 6444 | 132 | 132 | 1.74% | 2.05% |  |
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 | 251 | 201985 | 1116.65 | 727 | 708 | 180.3 |
| A | 12 | 80 | 44820 | 244.73 | 727 | 708 | 180.3 |
| A | 4 | 249 | 25241 | 136.11 | 727 | 708 | 180.3 |
| B | 5 | 172 | 2143878 | 14689.6 | 680 | 656 | 145.9 |
| B | 5 | 185 | 275264 | 1882.16 | 680 | 656 | 145.9 |
| B | 2 | 249 | 236818 | 1618.65 | 680 | 656 | 145.9 |
| C | 6 | 223 | 1015004 | 5281.79 | 693 | 685 | 192.0 |
| C | 12 | 252 | 53462 | 274.82 | 693 | 685 | 192.0 |
| C | 4 | 5 | 43231 | 221.55 | 693 | 685 | 192.0 |
| D | 11 | 129 | 402358 | 2042.36 | 693 | 660 | 196.7 |
| D | 8 | 160 | 322601 | 1636.85 | 693 | 660 | 196.7 |
| D | 2 | 153 | 78401 | 395.26 | 693 | 660 | 196.7 |
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 |  |