Observation information
- date-obs: 2026-06-30
- time-obs: 07:58:55.591100000
- date-end: 2026-06-30
- time-end: 10:10:27.568800000
- obs_id: A14_042T02_9000006586
- exposure: 5957.30721438
- 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_58193cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58193cztM0_level2_quad_clean.evt
|
| Size (bytes) | 432,832,320 | 98,798,400 |
| Size | 412.8 MB
| 94.2 MB
|
| Events in quadrant A | 3,019,369 | 666,807 |
| Events in quadrant B | 4,554,617 | 696,935 |
| Events in quadrant C | 3,360,923 | 620,571 |
| Events in quadrant D | 4,590,875 | 562,594 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 16 | 0 |
| C | 0 | 16 | 0 |
| D | 0 | 16 | 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 | 13250 | 2 |
| B | 0 | 17794 | 2 |
| C | 0 | 14430 | 2 |
| D | 0 | 17942 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6381 | 91 | 1.426109% |
| B | 6381 | 342 | 5.359661% |
| C | 6381 | 201 | 3.149976% |
| D | 6381 | 429 | 6.723084% |
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 | 7566 | 6382 | 3 | 3 | 0.04% | 0.05% |  |
| B | 7566 | 6382 | 135 | 135 | 1.78% | 2.12% |  |
| C | 7566 | 6382 | 133 | 133 | 1.76% | 2.08% |  |
| D | 7566 | 6382 | 322 | 322 | 4.26% | 5.05% |  |
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 | 24959 | 130.01 | 758 | 739 | 186.3 |
| A | 6 | 226 | 21056 | 109.06 | 758 | 739 | 186.3 |
| A | 4 | 3 | 20610 | 106.66 | 758 | 739 | 186.3 |
| B | 10 | 128 | 635224 | 4048.73 | 730 | 703 | 156.7 |
| B | 2 | 249 | 618070 | 3939.28 | 730 | 703 | 156.7 |
| B | 0 | 79 | 140678 | 893.15 | 730 | 703 | 156.7 |
| C | 13 | 16 | 407102 | 2061.04 | 723 | 714 | 197.2 |
| C | 6 | 223 | 52190 | 261.06 | 723 | 714 | 197.2 |
| C | 12 | 252 | 35048 | 174.13 | 723 | 714 | 197.2 |
| D | 8 | 160 | 1044869 | 5188.37 | 710 | 675 | 201.3 |
| D | 7 | 222 | 170981 | 846.21 | 710 | 675 | 201.3 |
| D | 8 | 240 | 145655 | 720.37 | 710 | 675 | 201.3 |
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 |  |