Observation information
- date-obs: 2026-07-01
- time-obs: 10:08:27.323300000
- date-end: 2026-07-01
- time-end: 12:13:23.302800000
- obs_id: A14_042T02_9000006586
- exposure: 6020.70757008
- 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_58209cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58209cztM0_level2_quad_clean.evt
|
| Size (bytes) | 423,302,400 | 96,258,240 |
| Size | 403.7 MB
| 91.8 MB
|
| Events in quadrant A | 3,230,632 | 637,686 |
| Events in quadrant B | 4,947,623 | 651,516 |
| Events in quadrant C | 3,255,354 | 602,438 |
| Events in quadrant D | 3,729,782 | 569,763 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 10 | 0 |
| B | 0 | 10 | 0 |
| C | 0 | 10 | 0 |
| D | 0 | 10 | 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 | 14244 | 1 |
| B | 0 | 18921 | 1 |
| C | 0 | 14352 | 1 |
| D | 0 | 15477 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6501 | 164 | 2.522689% |
| B | 6502 | 487 | 7.490003% |
| C | 6501 | 178 | 2.738040% |
| D | 6501 | 142 | 2.184279% |
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 | 7496 | 6502 | 63 | 63 | 0.84% | 0.97% |  |
| B | 7497 | 6502 | 323 | 323 | 4.31% | 4.97% |  |
| C | 7496 | 6501 | 47 | 47 | 0.63% | 0.72% |  |
| D | 7496 | 6502 | 62 | 62 | 0.83% | 0.95% |  |
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 | 13 | 248 | 317188 | 1751.45 | 726 | 705 | 180.7 |
| A | 3 | 245 | 37552 | 203.91 | 726 | 705 | 180.7 |
| A | 3 | 31 | 23121 | 124.05 | 726 | 705 | 180.7 |
| B | 10 | 128 | 861621 | 5781.5 | 693 | 668 | 148.9 |
| B | 2 | 249 | 687126 | 4609.73 | 693 | 668 | 148.9 |
| B | 4 | 201 | 231969 | 1553.24 | 693 | 668 | 148.9 |
| C | 12 | 252 | 190063 | 985.26 | 697 | 691 | 192.2 |
| C | 4 | 239 | 168845 | 874.87 | 697 | 691 | 192.2 |
| C | 6 | 223 | 88755 | 458.18 | 697 | 691 | 192.2 |
| D | 8 | 160 | 290551 | 1444.05 | 706 | 677 | 200.7 |
| D | 8 | 240 | 249026 | 1237.18 | 706 | 677 | 200.7 |
| D | 12 | 110 | 140322 | 695.66 | 706 | 677 | 200.7 |
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 |  |