Observation information
- date-obs: 2026-07-17
- time-obs: 14:35:17.234300000
- date-end: 2026-07-17
- time-end: 16:37:01.217000000
- obs_id: A14_045T01_9000006590
- exposure: 6163.65201765
- 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_58449cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58449cztM0_level2_quad_clean.evt
|
| Size (bytes) | 386,504,640 | 93,767,040 |
| Size | 368.6 MB
| 89.4 MB
|
| Events in quadrant A | 2,883,454 | 615,054 |
| Events in quadrant B | 3,431,999 | 643,459 |
| Events in quadrant C | 2,894,749 | 591,838 |
| Events in quadrant D | 4,589,673 | 534,458 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13528 | 1 |
| B | 0 | 14794 | 1 |
| C | 0 | 13491 | 2 |
| D | 0 | 18143 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6514 | 51 | 0.782929% |
| B | 6514 | 180 | 2.763279% |
| C | 6514 | 27 | 0.414492% |
| D | 6514 | 380 | 5.833589% |
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 | 7304 | 6514 | 8 | 8 | 0.11% | 0.12% |  |
| B | 7304 | 6514 | 103 | 103 | 1.41% | 1.58% |  |
| C | 7304 | 6515 | 10 | 10 | 0.14% | 0.15% |  |
| D | 7304 | 6515 | 346 | 346 | 4.74% | 5.31% |  |
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 | 57984 | 326.74 | 702 | 684 | 175.4 |
| A | 8 | 230 | 27291 | 151.72 | 702 | 684 | 175.4 |
| A | 12 | 80 | 21811 | 120.47 | 702 | 684 | 175.4 |
| B | 4 | 171 | 198505 | 1329.86 | 690 | 664 | 148.8 |
| B | 5 | 172 | 74299 | 494.96 | 690 | 664 | 148.8 |
| B | 0 | 186 | 56875 | 377.84 | 690 | 664 | 148.8 |
| C | 14 | 245 | 67712 | 356.44 | 684 | 680 | 188.1 |
| C | 6 | 13 | 33232 | 173.09 | 684 | 680 | 188.1 |
| C | 4 | 5 | 33211 | 172.98 | 684 | 680 | 188.1 |
| D | 8 | 240 | 1590545 | 8340.93 | 665 | 634 | 190.6 |
| D | 2 | 249 | 101495 | 529.13 | 665 | 634 | 190.6 |
| D | 2 | 31 | 58104 | 301.5 | 665 | 634 | 190.6 |
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 |  |