Observation information
- date-obs: 2026-07-16
- time-obs: 19:22:12.388100000
- date-end: 2026-07-16
- time-end: 21:30:29.360200000
- obs_id: A14_045T01_9000006590
- exposure: 6149.8053686
- 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_58438cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58438cztM0_level2_quad_clean.evt
|
| Size (bytes) | 405,535,680 | 96,246,720 |
| Size | 386.7 MB
| 91.8 MB
|
| Events in quadrant A | 3,806,197 | 625,785 |
| Events in quadrant B | 3,691,979 | 674,951 |
| Events in quadrant C | 3,439,352 | 605,277 |
| Events in quadrant D | 3,576,647 | 562,653 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15824 | 2 |
| B | 0 | 15444 | 5 |
| C | 0 | 14708 | 2 |
| D | 0 | 15132 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6393 | 167 | 2.612232% |
| B | 6392 | 171 | 2.675219% |
| C | 6392 | 81 | 1.267209% |
| D | 6392 | 132 | 2.065081% |
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 | 7568 | 6394 | 133 | 133 | 1.76% | 2.08% |  |
| B | 7567 | 6393 | 119 | 119 | 1.57% | 1.86% |  |
| C | 7567 | 6393 | 86 | 86 | 1.14% | 1.35% |  |
| D | 7567 | 6393 | 116 | 116 | 1.53% | 1.81% |  |
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 | 12 | 114 | 701197 | 4023.97 | 701 | 684 | 174.1 |
| A | 7 | 64 | 234537 | 1343.32 | 701 | 684 | 174.1 |
| A | 10 | 251 | 42762 | 241.71 | 701 | 684 | 174.1 |
| B | 4 | 201 | 230840 | 1529.36 | 698 | 673 | 150.5 |
| B | 5 | 172 | 224954 | 1490.25 | 698 | 673 | 150.5 |
| B | 5 | 185 | 113101 | 747.03 | 698 | 673 | 150.5 |
| C | 6 | 223 | 252542 | 1329.45 | 683 | 677 | 189.4 |
| C | 14 | 254 | 124586 | 654.05 | 683 | 677 | 189.4 |
| C | 12 | 250 | 75747 | 396.25 | 683 | 677 | 189.4 |
| D | 8 | 240 | 640863 | 3275.21 | 676 | 646 | 195.5 |
| D | 5 | 32 | 67307 | 341.02 | 676 | 646 | 195.5 |
| D | 10 | 86 | 49509 | 249.97 | 676 | 646 | 195.5 |
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 |  |