Observation information
- date-obs: 2026-07-15
- time-obs: 20:42:12.567800000
- date-end: 2026-07-15
- time-end: 22:57:33.540300000
- obs_id: A14_045T01_9000006590
- exposure: 6113.77931267
- 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_58424cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58424cztM0_level2_quad_clean.evt
|
| Size (bytes) | 390,735,360 | 96,926,400 |
| Size | 372.6 MB
| 92.4 MB
|
| Events in quadrant A | 2,956,807 | 642,930 |
| Events in quadrant B | 3,817,011 | 682,771 |
| Events in quadrant C | 3,498,150 | 602,171 |
| Events in quadrant D | 3,698,398 | 564,613 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13339 | 2 |
| B | 0 | 15473 | 2 |
| C | 0 | 14895 | 2 |
| D | 0 | 15396 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 18 | 0 |
| C | 0 | 18 | 0 |
| D | 0 | 18 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6338 | 41 | 0.646892% |
| B | 6337 | 159 | 2.509074% |
| C | 6337 | 166 | 2.619536% |
| D | 6337 | 127 | 2.004103% |
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 | 7538 | 6339 | 9 | 9 | 0.12% | 0.14% |  |
| B | 7537 | 6338 | 106 | 106 | 1.41% | 1.67% |  |
| C | 7537 | 6338 | 107 | 107 | 1.42% | 1.69% |  |
| D | 7537 | 6338 | 96 | 96 | 1.27% | 1.51% |  |
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 | 75738 | 421.58 | 712 | 694 | 178.0 |
| A | 11 | 31 | 27951 | 153.12 | 712 | 694 | 178.0 |
| A | 7 | 112 | 27462 | 150.38 | 712 | 694 | 178.0 |
| B | 5 | 172 | 413629 | 2715.03 | 704 | 678 | 152.1 |
| B | 4 | 201 | 187065 | 1225.44 | 704 | 678 | 152.1 |
| B | 6 | 255 | 110435 | 721.62 | 704 | 678 | 152.1 |
| C | 5 | 10 | 432410 | 2293.02 | 683 | 678 | 188.3 |
| C | 6 | 223 | 117624 | 621.13 | 683 | 678 | 188.3 |
| C | 14 | 245 | 61077 | 320.79 | 683 | 678 | 188.3 |
| D | 8 | 240 | 462037 | 2385.72 | 677 | 648 | 193.4 |
| D | 10 | 86 | 172799 | 890.15 | 677 | 648 | 193.4 |
| D | 7 | 222 | 111412 | 572.73 | 677 | 648 | 193.4 |
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 |  |