Observation information
- date-obs: 2026-06-24
- time-obs: 08:13:08.540600000
- date-end: 2026-06-24
- time-end: 10:17:10.029700000
- obs_id: A14_042T02_9000006586
- exposure: 592.3647542
- 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_58104cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58104cztM0_level2_quad_clean.evt
|
| Size (bytes) | 903,110,400 | 66,623,040 |
| Size | 861.3 MB
| 63.5 MB
|
| Events in quadrant A | 3,687,080 | 643,851 |
| Events in quadrant B | 11,972,980 | 251,338 |
| Events in quadrant C | 3,234,990 | 618,820 |
| Events in quadrant D | 14,042,800 | 60,971 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 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 | 15220 | 1 |
| B | 0 | 39900 | 1 |
| C | 0 | 13866 | 1 |
| D | 0 | 45928 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6342 | 208 | 3.279722% |
| B | 6343 | 4387 | 69.162857% |
| C | 6342 | 101 | 1.592558% |
| D | 6342 | 5831 | 91.942605% |
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 | 7442 | 6342 | 95 | 95 | 1.28% | 1.50% |  |
| B | 7443 | 6343 | 3863 | 3863 | 51.90% | 60.90% |  |
| C | 7442 | 6342 | 25 | 25 | 0.34% | 0.39% |  |
| D | 7441 | 6341 | 5350 | 5350 | 71.90% | 84.37% |  |
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 | 10 | 251 | 711375 | 3869.09 | 741 | 720 | 183.7 |
| A | 6 | 195 | 45071 | 241.46 | 741 | 720 | 183.7 |
| A | 3 | 61 | 20455 | 107.45 | 741 | 720 | 183.7 |
| B | 5 | 172 | 8050664 | 70405.97 | 529 | 509 | 114.3 |
| B | 10 | 128 | 1569272 | 13720.27 | 529 | 509 | 114.3 |
| B | 5 | 185 | 57535 | 498.74 | 529 | 509 | 114.3 |
| C | 12 | 252 | 260728 | 1317.76 | 718 | 710 | 197.3 |
| C | 6 | 223 | 54713 | 273.68 | 718 | 710 | 197.3 |
| C | 9 | 38 | 40375 | 201.02 | 718 | 710 | 197.3 |
| D | 12 | 110 | 12058115 | 106129.72 | 396 | 377 | 113.6 |
| D | 8 | 160 | 200789 | 1763.99 | 396 | 377 | 113.6 |
| D | 2 | 249 | 95250 | 835.05 | 396 | 377 | 113.6 |
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 |  |