Observation information
- date-obs: 2026-06-27
- time-obs: 02:12:30.385200000
- date-end: 2026-06-27
- time-end: 04:11:17.366900000
- obs_id: A14_042T02_9000006586
- exposure: 3127.66010594
- sourceid: NGC4038
- observer: pshalima
- ra_pnt: 180.4708
- dec_pnt: -18.86759
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_042T02_9000006586_58144cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58144cztM0_level2_quad_clean.evt
|
| Size (bytes) | 640,992,960 | 80,331,840 |
| Size | 611.3 MB
| 76.6 MB
|
| Events in quadrant A | 2,768,147 | 604,490 |
| Events in quadrant B | 11,651,368 | 323,049 |
| Events in quadrant C | 3,194,744 | 561,014 |
| Events in quadrant D | 5,622,220 | 502,469 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 8 | 0 |
| B | 0 | 8 | 0 |
| C | 0 | 8 | 0 |
| D | 0 | 8 | 0 |
| 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 | 12866 | 1 |
| B | 0 | 38984 | 5 |
| C | 0 | 14158 | 1 |
| D | 0 | 21097 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6322 | 36 | 0.569440% |
| B | 6322 | 3468 | 54.856058% |
| C | 6322 | 146 | 2.309396% |
| D | 6322 | 454 | 7.181272% |
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 | 7127 | 6323 | 1 | 1 | 0.01% | 0.02% |  |
| B | 7127 | 6322 | 2912 | 2912 | 40.86% | 46.06% |  |
| C | 7127 | 6323 | 64 | 64 | 0.90% | 1.01% |  |
| D | 7127 | 6322 | 426 | 426 | 5.98% | 6.74% |  |
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 | 11 | 3 | 55281 | 318.38 | 693 | 672 | 171.5 |
| A | 4 | 3 | 22422 | 126.81 | 693 | 672 | 171.5 |
| A | 3 | 137 | 8582 | 46.12 | 693 | 672 | 171.5 |
| B | 10 | 128 | 9305968 | 86972.76 | 496 | 478 | 107.0 |
| B | 5 | 185 | 173260 | 1614.89 | 496 | 478 | 107.0 |
| B | 0 | 171 | 41218 | 380.77 | 496 | 478 | 107.0 |
| C | 13 | 3 | 223809 | 1222.43 | 667 | 660 | 182.5 |
| C | 1 | 12 | 171657 | 936.74 | 667 | 660 | 182.5 |
| C | 9 | 38 | 108344 | 589.9 | 667 | 660 | 182.5 |
| D | 12 | 110 | 1746695 | 9599.11 | 643 | 616 | 181.9 |
| D | 8 | 160 | 709116 | 3894.99 | 643 | 616 | 181.9 |
| D | 3 | 224 | 230511 | 1263.85 | 643 | 616 | 181.9 |
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 |  |