Observation information
- date-obs: 2026-06-23
- time-obs: 07:45:37.297900000
- date-end: 2026-06-23
- time-end: 10:01:07.275300000
- obs_id: A14_042T02_9000006586
- exposure: 5178.61476433
- 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_58089cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58089cztM0_level2_quad_clean.evt
|
| Size (bytes) | 537,966,720 | 94,760,640 |
| Size | 513.0 MB
| 90.4 MB
|
| Events in quadrant A | 3,001,194 | 668,533 |
| Events in quadrant B | 7,905,562 | 567,811 |
| Events in quadrant C | 3,258,739 | 630,179 |
| Events in quadrant D | 5,242,159 | 548,386 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13431 | 2 |
| B | 0 | 28013 | 2 |
| C | 0 | 14298 | 2 |
| D | 0 | 19931 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6517 | 74 | 1.135492% |
| B | 6517 | 1559 | 23.922050% |
| C | 6517 | 92 | 1.411692% |
| D | 6516 | 553 | 8.486802% |
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 | 7617 | 6517 | 2 | 2 | 0.03% | 0.03% |  |
| B | 7617 | 6517 | 913 | 913 | 11.99% | 14.01% |  |
| C | 7617 | 6517 | 18 | 18 | 0.24% | 0.28% |  |
| D | 7616 | 6516 | 392 | 392 | 5.15% | 6.02% |  |
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 | 245 | 19755 | 101.36 | 762 | 743 | 187.6 |
| A | 3 | 61 | 18524 | 94.8 | 762 | 743 | 187.6 |
| A | 10 | 251 | 15970 | 81.18 | 762 | 743 | 187.6 |
| B | 10 | 128 | 4308561 | 29502.73 | 687 | 662 | 146.0 |
| B | 5 | 172 | 521160 | 3564.64 | 687 | 662 | 146.0 |
| B | 0 | 63 | 116533 | 793.54 | 687 | 662 | 146.0 |
| C | 15 | 208 | 100093 | 501.38 | 732 | 726 | 198.2 |
| C | 12 | 252 | 97919 | 490.42 | 732 | 726 | 198.2 |
| C | 15 | 201 | 86157 | 431.07 | 732 | 726 | 198.2 |
| D | 12 | 110 | 1338960 | 6650.54 | 715 | 685 | 201.2 |
| D | 8 | 160 | 461580 | 2290.41 | 715 | 685 | 201.2 |
| D | 12 | 1 | 123655 | 611.1 | 715 | 685 | 201.2 |
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 |  |