Observation information
- date-obs: 2026-07-14
- time-obs: 08:19:50.852900000
- date-end: 2026-07-14
- time-end: 10:36:50.836200000
- obs_id: A14_045T01_9000006590
- exposure: 6546.96303594
- 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_58401cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58401cztM0_level2_quad_clean.evt
|
| Size (bytes) | 917,406,720 | 108,207,360 |
| Size | 874.9 MB
| 103.2 MB
|
| Events in quadrant A | 8,315,203 | 654,708 |
| Events in quadrant B | 8,018,736 | 773,799 |
| Events in quadrant C | 9,322,899 | 597,932 |
| Events in quadrant D | 7,667,742 | 678,329 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 164 | 0 |
| B | 0 | 164 | 0 |
| C | 0 | 164 | 0 |
| D | 0 | 164 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 30367 | 0 |
| B | 0 | 29605 | 0 |
| C | 0 | 33476 | 0 |
| D | 0 | 28590 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8220 | 1480 | 18.004866% |
| B | 8221 | 1054 | 12.820825% |
| C | 8221 | 1897 | 23.075052% |
| D | 8221 | 490 | 5.960345% |
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 | 8220 | 8220 | 1101 | 1101 | 13.39% | 13.39% |  |
| B | 8221 | 8221 | 652 | 652 | 7.93% | 7.93% |  |
| C | 8221 | 8221 | 1446 | 1446 | 17.59% | 17.59% |  |
| D | 8221 | 8221 | 419 | 419 | 5.10% | 5.10% |  |
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 | 4005452 | 18421.86 | 883 | 862 | 217.4 |
| A | 12 | 80 | 397740 | 1825.71 | 883 | 862 | 217.4 |
| A | 7 | 64 | 145244 | 664.18 | 883 | 862 | 217.4 |
| B | 5 | 172 | 2936125 | 15238.72 | 895 | 861 | 192.6 |
| B | 4 | 158 | 600300 | 3112.05 | 895 | 861 | 192.6 |
| B | 6 | 255 | 282482 | 1462.06 | 895 | 861 | 192.6 |
| C | 9 | 38 | 3079573 | 13889.86 | 810 | 804 | 221.7 |
| C | 6 | 223 | 1654763 | 7461.83 | 810 | 804 | 221.7 |
| C | 15 | 147 | 623216 | 2808.01 | 810 | 804 | 221.7 |
| D | 5 | 113 | 2012795 | 7910.92 | 889 | 843 | 254.3 |
| D | 8 | 240 | 765395 | 3006.19 | 889 | 843 | 254.3 |
| D | 2 | 249 | 699465 | 2746.96 | 889 | 843 | 254.3 |
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 |  |