Observation information
- date-obs: 2026-07-14
- time-obs: 06:45:47.861900000
- date-end: 2026-07-14
- time-end: 08:49:16.849500000
- obs_id: A14_045T01_9000006590
- exposure: 5254.53521252
- 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_58400cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58400cztM0_level2_quad_clean.evt
|
| Size (bytes) | 799,300,800 | 96,802,560 |
| Size | 762.3 MB
| 92.3 MB
|
| Events in quadrant A | 7,595,166 | 557,740 |
| Events in quadrant B | 4,222,387 | 760,134 |
| Events in quadrant C | 9,991,650 | 484,419 |
| Events in quadrant D | 7,204,808 | 612,732 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 148 | 0 |
| B | 0 | 148 | 0 |
| C | 0 | 148 | 0 |
| D | 0 | 148 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 27682 | 0 |
| B | 0 | 17441 | 0 |
| C | 0 | 34757 | 0 |
| D | 0 | 26732 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7409 | 1718 | 23.188015% |
| B | 7410 | 213 | 2.874494% |
| C | 7410 | 2452 | 33.090418% |
| D | 7410 | 486 | 6.558704% |
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 | 7409 | 7409 | 1247 | 1247 | 16.83% | 16.83% |  |
| B | 7410 | 7410 | 65 | 65 | 0.88% | 0.88% |  |
| C | 7410 | 7410 | 1836 | 1836 | 24.78% | 24.78% |  |
| D | 7410 | 7410 | 388 | 388 | 5.24% | 5.24% |  |
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 | 4082259 | 21295.53 | 776 | 755 | 191.7 |
| A | 12 | 80 | 210555 | 1094.65 | 776 | 755 | 191.7 |
| A | 2 | 143 | 121694 | 631.01 | 776 | 755 | 191.7 |
| B | 4 | 158 | 277895 | 1560.11 | 824 | 794 | 177.6 |
| B | 0 | 153 | 199453 | 1118.47 | 824 | 794 | 177.6 |
| B | 4 | 201 | 105270 | 588.21 | 824 | 794 | 177.6 |
| C | 6 | 223 | 3814481 | 20204.15 | 685 | 677 | 188.8 |
| C | 5 | 10 | 1805424 | 9560.9 | 685 | 677 | 188.8 |
| C | 9 | 38 | 903638 | 4783.56 | 685 | 677 | 188.8 |
| D | 5 | 113 | 2152271 | 9621.93 | 793 | 760 | 223.6 |
| D | 8 | 240 | 1454396 | 6500.91 | 793 | 760 | 223.6 |
| D | 12 | 248 | 113547 | 504.4 | 793 | 760 | 223.6 |
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 |  |