Observation information
- date-obs: 2026-07-14
- time-obs: 15:51:03.790100000
- date-end: 2026-07-15
- time-end: 03:53:33.697600000
- obs_id: A14_045T01_9000006590
- exposure: 15311.668554
- 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_58412cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58412cztM0_level2_quad_clean.evt
|
| Size (bytes) | 3,940,617,600 | 453,625,920 |
| Size | 3.7 GB
| 432.6 MB
|
| Events in quadrant A | 35,180,013 | 3,275,907 |
| Events in quadrant B | 64,131,831 | 1,562,902 |
| Events in quadrant C | 19,872,490 | 3,357,349 |
| Events in quadrant D | 23,918,816 | 3,073,868 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 728 | 0 |
| B | 0 | 728 | 0 |
| C | 0 | 728 | 0 |
| D | 0 | 728 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 129348 | 82 |
| B | 0 | 215265 | 201 |
| C | 0 | 83844 | 26 |
| D | 0 | 96146 | 35 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 76 | 0 |
| B | 0 | 76 | 0 |
| C | 0 | 76 | 0 |
| D | 0 | 76 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 35865 | 3581 | 9.984665% |
| B | 35851 | 22173 | 61.847647% |
| C | 35873 | 548 | 1.527611% |
| D | 35870 | 1263 | 3.521048% |
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 | 43350 | 35887 | 2797 | 2797 | 6.45% | 7.79% |  |
| B | 43351 | 35874 | 14968 | 14968 | 34.53% | 41.72% |  |
| C | 43350 | 35887 | 308 | 308 | 0.71% | 0.86% |  |
| D | 43350 | 35887 | 947 | 947 | 2.18% | 2.64% |  |
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 | 6568516 | 6840.15 | 3910 | 3818 | 959.7 |
| A | 3 | 14 | 6292428 | 6552.48 | 3910 | 3818 | 959.7 |
| A | 4 | 249 | 3350087 | 3486.68 | 3910 | 3818 | 959.7 |
| B | 6 | 255 | 48706707 | 86073.97 | 2663 | 2558 | 565.8 |
| B | 5 | 172 | 2502181 | 4417.54 | 2663 | 2558 | 565.8 |
| B | 4 | 158 | 1038732 | 1831.21 | 2663 | 2558 | 565.8 |
| C | 9 | 38 | 1380636 | 1303.16 | 3873 | 3839 | 1056.5 |
| C | 5 | 10 | 843073 | 794.35 | 3873 | 3839 | 1056.5 |
| C | 13 | 3 | 739121 | 695.96 | 3873 | 3839 | 1056.5 |
| D | 12 | 110 | 3681458 | 3393.86 | 3816 | 3650 | 1083.7 |
| D | 8 | 240 | 2875081 | 2649.74 | 3816 | 3650 | 1083.7 |
| D | 2 | 249 | 627381 | 575.57 | 3816 | 3650 | 1083.7 |
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 |  |