Observation information
- date-obs: 2026-06-30
- time-obs: 11:44:08.553900000
- date-end: 2026-06-30
- time-end: 13:42:11.534800000
- obs_id: A14_042T02_9000006586
- exposure: 5582.04175985
- 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_58195cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58195cztM0_level2_quad_clean.evt
|
| Size (bytes) | 452,802,240 | 90,616,320 |
| Size | 431.8 MB
| 86.4 MB
|
| Events in quadrant A | 2,822,461 | 612,850 |
| Events in quadrant B | 5,715,784 | 599,245 |
| Events in quadrant C | 2,742,960 | 587,402 |
| Events in quadrant D | 4,994,174 | 508,528 |
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 | 126 | 0 |
| B | 0 | 126 | 0 |
| C | 0 | 126 | 0 |
| D | 0 | 126 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12998 | 1 |
| B | 0 | 21232 | 1 |
| C | 0 | 12961 | 2 |
| D | 0 | 19238 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6248 | 117 | 1.872599% |
| B | 6248 | 737 | 11.795775% |
| C | 6248 | 67 | 1.072343% |
| D | 6248 | 620 | 9.923175% |
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 | 7083 | 6249 | 5 | 5 | 0.07% | 0.08% |  |
| B | 7083 | 6249 | 526 | 526 | 7.43% | 8.42% |  |
| C | 7083 | 6249 | 1 | 1 | 0.01% | 0.02% |  |
| D | 7083 | 6248 | 410 | 410 | 5.79% | 6.56% |  |
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 | 232 | 37097 | 207.01 | 708 | 689 | 175.9 |
| A | 4 | 3 | 17078 | 93.18 | 708 | 689 | 175.9 |
| A | 3 | 245 | 15597 | 84.76 | 708 | 689 | 175.9 |
| B | 10 | 128 | 1311947 | 9021.09 | 666 | 641 | 145.4 |
| B | 2 | 249 | 1188031 | 8168.62 | 666 | 641 | 145.4 |
| B | 4 | 201 | 222687 | 1527.56 | 666 | 641 | 145.4 |
| C | 6 | 223 | 22220 | 115.95 | 680 | 675 | 185.8 |
| C | 4 | 239 | 19400 | 100.77 | 680 | 675 | 185.8 |
| C | 15 | 208 | 16615 | 85.79 | 680 | 675 | 185.8 |
| D | 12 | 110 | 1090637 | 5802.04 | 653 | 623 | 187.9 |
| D | 6 | 239 | 590966 | 3142.34 | 653 | 623 | 187.9 |
| D | 7 | 222 | 273718 | 1453.66 | 653 | 623 | 187.9 |
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 |  |