Observation information
- date-obs: 2026-07-18
- time-obs: 04:20:02.118200000
- date-end: 2026-07-18
- time-end: 05:37:30.107700000
- obs_id: A14_045T01_9000006590
- exposure: 2666.84148043
- 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_58458cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58458cztM0_level2_quad_clean.evt
|
| Size (bytes) | 398,453,760 | 60,655,680 |
| Size | 380.0 MB
| 57.8 MB
|
| Events in quadrant A | 2,006,970 | 437,547 |
| Events in quadrant B | 7,230,398 | 277,188 |
| Events in quadrant C | 2,086,303 | 414,067 |
| Events in quadrant D | 3,062,995 | 380,928 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 94 | 0 |
| B | 0 | 94 | 0 |
| C | 0 | 94 | 0 |
| D | 0 | 94 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9466 | 0 |
| B | 0 | 24671 | 0 |
| C | 0 | 9750 | 0 |
| D | 0 | 12384 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 4648 | 7 | 0.150602% |
| B | 4648 | 2081 | 44.771945% |
| C | 4648 | 41 | 0.882100% |
| D | 4649 | 178 | 3.828780% |
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 | 4648 | 4648 | 6 | 6 | 0.13% | 0.13% |  |
| B | 4647 | 4647 | 1949 | 1949 | 41.94% | 41.94% |  |
| C | 4648 | 4648 | 41 | 41 | 0.88% | 0.88% |  |
| D | 4649 | 4649 | 176 | 176 | 3.79% | 3.79% |  |
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 | 80 | 64511 | 518.0 | 493 | 479 | 123.6 |
| A | 13 | 248 | 9962 | 76.71 | 493 | 479 | 123.6 |
| A | 13 | 254 | 8823 | 67.5 | 493 | 479 | 123.6 |
| B | 2 | 249 | 5315361 | 71629.92 | 340 | 329 | 74.2 |
| B | 5 | 172 | 279036 | 3756.09 | 340 | 329 | 74.2 |
| B | 8 | 128 | 161351 | 2170.07 | 340 | 329 | 74.2 |
| C | 13 | 3 | 93660 | 705.14 | 474 | 470 | 132.2 |
| C | 14 | 245 | 36154 | 270.01 | 474 | 470 | 132.2 |
| C | 12 | 254 | 22498 | 166.68 | 474 | 470 | 132.2 |
| D | 8 | 240 | 697911 | 5184.79 | 468 | 446 | 134.5 |
| D | 2 | 249 | 107359 | 794.77 | 468 | 446 | 134.5 |
| D | 2 | 31 | 94615 | 700.03 | 468 | 446 | 134.5 |
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 |  |