Observation information
- date-obs: 2026-06-23
- time-obs: 06:07:17.314400000
- date-end: 2026-07-02
- time-end: 03:54:16.146300000
- obs_id: A14_042T02_9000006586
- exposure: 54806.5342446
- 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_9000006586cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586cztM0_level2_quad_clean.evt
|
| Size (bytes) | 5,503,357,440 | 2,092,302,720 |
| Size | 5.1 GB
| 1.9 GB
|
| Events in quadrant A | 35,146,216 | 5,622,315 |
| Events in quadrant B | 26,060,830 | 3,812,078 |
| Events in quadrant C | 33,819,174 | 5,222,318 |
| Events in quadrant D | 26,175,308 | 3,367,852 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 806 | 0 |
| B | 0 | 808 | 0 |
| C | 0 | 808 | 0 |
| D | 0 | 808 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13424 | 0 |
| B | 0 | 13424 | 0 |
| C | 0 | 13424 | 0 |
| D | 0 | 13424 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1407085 | 0 |
| B | 0 | 3024402 | 0 |
| C | 0 | 1435000 | 0 |
| D | 0 | 2747467 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 661454 | 10618 | 1.605251% |
| B | 661455 | 211179 | 31.926435% |
| C | 661452 | 8140 | 1.230626% |
| D | 661452 | 146584 | 22.160943% |
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 | 769485 | 661309 | 0 | 0 | 0.00% | 0.00% |  |
| B | 769484 | 642575 | 0 | 0 | 0.00% | 0.00% |  |
| C | 769484 | 661342 | 0 | 0 | 0.00% | 0.00% |  |
| D | 769484 | 660489 | 0 | 0 | 0.00% | 0.00% |  |
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 | 14 | 188 | 39041 | 9.83 | 9209 | 8441 | 3113.1 |
| A | 9 | 255 | 34534 | 8.38 | 9209 | 8441 | 3113.1 |
| A | 14 | 204 | 32100 | 7.6 | 9209 | 8441 | 3113.1 |
| B | 2 | 9 | 30170 | 14.75 | 6886 | 6490 | 1605.6 |
| B | 2 | 8 | 26623 | 12.54 | 6886 | 6490 | 1605.6 |
| B | 3 | 25 | 22278 | 9.83 | 6886 | 6490 | 1605.6 |
| C | 15 | 175 | 27884 | 6.39 | 9008 | 8146 | 3089.7 |
| C | 2 | 31 | 26976 | 6.09 | 9008 | 8146 | 3089.7 |
| C | 15 | 127 | 26671 | 6.0 | 9008 | 8146 | 3089.7 |
| D | 6 | 218 | 31369 | 9.97 | 7464 | 6613 | 2483.3 |
| D | 15 | 11 | 25500 | 7.61 | 7464 | 6613 | 2483.3 |
| D | 8 | 12 | 24542 | 7.22 | 7464 | 6613 | 2483.3 |
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 |  |