Observation information
- date-obs: 2026-07-16
- time-obs: 20:57:12.374500000
- date-end: 2026-07-16
- time-end: 23:12:27.346100000
- obs_id: A14_045T01_9000006590
- exposure: 5886.44165713
- 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_58439cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58439cztM0_level2_quad_clean.evt
|
| Size (bytes) | 392,987,520 | 95,708,160 |
| Size | 374.8 MB
| 91.3 MB
|
| Events in quadrant A | 3,338,764 | 635,636 |
| Events in quadrant B | 3,792,706 | 663,861 |
| Events in quadrant C | 3,449,090 | 606,579 |
| Events in quadrant D | 3,481,685 | 556,794 |
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 | 14216 | 2 |
| B | 0 | 15532 | 2 |
| C | 0 | 14587 | 2 |
| D | 0 | 14798 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 18 | 0 |
| B | 0 | 19 | 0 |
| C | 0 | 19 | 0 |
| D | 0 | 19 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6231 | 39 | 0.625903% |
| B | 6231 | 291 | 4.670197% |
| C | 6231 | 61 | 0.978976% |
| D | 6231 | 150 | 2.407318% |
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 | 7456 | 6232 | 13 | 13 | 0.17% | 0.21% |  |
| B | 7456 | 6232 | 223 | 223 | 2.99% | 3.58% |  |
| C | 7456 | 6232 | 42 | 42 | 0.56% | 0.67% |  |
| D | 7456 | 6232 | 126 | 126 | 1.69% | 2.02% |  |
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 | 263608 | 1508.09 | 706 | 691 | 174.3 |
| A | 12 | 114 | 182681 | 1043.89 | 706 | 691 | 174.3 |
| A | 3 | 62 | 85839 | 488.41 | 706 | 691 | 174.3 |
| B | 4 | 201 | 375401 | 2538.05 | 690 | 665 | 147.6 |
| B | 5 | 185 | 228651 | 1544.12 | 690 | 665 | 147.6 |
| B | 5 | 172 | 163479 | 1102.72 | 690 | 665 | 147.6 |
| C | 14 | 245 | 344477 | 1823.64 | 682 | 678 | 188.5 |
| C | 12 | 249 | 182479 | 964.34 | 682 | 678 | 188.5 |
| C | 12 | 250 | 48329 | 252.76 | 682 | 678 | 188.5 |
| D | 8 | 240 | 567069 | 2953.9 | 669 | 637 | 191.8 |
| D | 6 | 239 | 92253 | 477.77 | 669 | 637 | 191.8 |
| D | 5 | 173 | 45006 | 231.38 | 669 | 637 | 191.8 |
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 |  |