Observation information
- date-obs: 2026-07-13
- time-obs: 21:52:12.937700000
- date-end: 2026-07-14
- time-end: 00:07:33.908800000
- obs_id: A14_045T01_9000006590
- exposure: 5785.06157368
- 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_58395cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58395cztM0_level2_quad_clean.evt
|
| Size (bytes) | 533,568,960 | 94,109,760 |
| Size | 508.9 MB
| 89.8 MB
|
| Events in quadrant A | 4,728,369 | 614,334 |
| Events in quadrant B | 4,087,492 | 678,785 |
| Events in quadrant C | 4,545,628 | 569,251 |
| Events in quadrant D | 5,901,722 | 548,177 |
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 | 18257 | 2 |
| B | 0 | 16289 | 2 |
| C | 0 | 17899 | 2 |
| D | 0 | 21674 | 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 | 6290 | 349 | 5.548490% |
| B | 6290 | 272 | 4.324324% |
| C | 6290 | 538 | 8.553259% |
| D | 6290 | 313 | 4.976153% |
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 | 7480 | 6291 | 298 | 298 | 3.98% | 4.74% |  |
| B | 7480 | 6291 | 183 | 183 | 2.45% | 2.91% |  |
| C | 7480 | 6291 | 499 | 499 | 6.67% | 7.93% |  |
| D | 7480 | 6291 | 275 | 275 | 3.68% | 4.37% |  |
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 | 7 | 64 | 1076900 | 6113.82 | 706 | 688 | 176.0 |
| A | 12 | 114 | 453229 | 2570.83 | 706 | 688 | 176.0 |
| A | 2 | 143 | 245716 | 1391.97 | 706 | 688 | 176.0 |
| B | 5 | 172 | 555562 | 3681.29 | 708 | 683 | 150.7 |
| B | 4 | 201 | 231329 | 1530.2 | 708 | 683 | 150.7 |
| B | 6 | 255 | 116682 | 769.58 | 708 | 683 | 150.7 |
| C | 9 | 38 | 1395086 | 7492.26 | 674 | 668 | 186.1 |
| C | 6 | 223 | 252473 | 1352.96 | 674 | 668 | 186.1 |
| C | 4 | 5 | 110432 | 589.77 | 674 | 668 | 186.1 |
| D | 5 | 113 | 2126751 | 11006.48 | 676 | 647 | 193.2 |
| D | 12 | 128 | 577583 | 2986.7 | 676 | 647 | 193.2 |
| D | 11 | 129 | 170068 | 877.06 | 676 | 647 | 193.2 |
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 |  |