Observation information
- date-obs: 2026-07-01
- time-obs: 01:33:20.414900000
- date-end: 2026-07-01
- time-end: 03:37:02.392500000
- obs_id: A14_042T02_9000006586
- exposure: 2640.52838027
- 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_58203cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58203cztM0_level2_quad_clean.evt
|
| Size (bytes) | 701,205,120 | 83,580,480 |
| Size | 668.7 MB
| 79.7 MB
|
| Events in quadrant A | 3,076,212 | 618,081 |
| Events in quadrant B | 5,604,921 | 643,660 |
| Events in quadrant C | 3,023,326 | 587,513 |
| Events in quadrant D | 13,745,518 | 226,440 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 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 | 14129 | 1 |
| B | 0 | 21160 | 1 |
| C | 0 | 13816 | 1 |
| D | 0 | 45243 | 4 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6523 | 123 | 1.885635% |
| B | 6523 | 388 | 5.948183% |
| C | 6523 | 77 | 1.180438% |
| D | 6522 | 4235 | 64.934069% |
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 | 7423 | 6524 | 52 | 52 | 0.70% | 0.80% |  |
| B | 7423 | 6523 | 171 | 171 | 2.30% | 2.62% |  |
| C | 7423 | 6523 | 8 | 8 | 0.11% | 0.12% |  |
| D | 7422 | 6522 | 3925 | 3925 | 52.88% | 60.18% |  |
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 | 194638 | 1107.2 | 707 | 688 | 175.2 |
| A | 3 | 245 | 118825 | 674.4 | 707 | 688 | 175.2 |
| A | 4 | 3 | 10333 | 55.06 | 707 | 688 | 175.2 |
| B | 10 | 128 | 2544230 | 17083.78 | 691 | 665 | 148.9 |
| B | 7 | 252 | 70242 | 467.31 | 691 | 665 | 148.9 |
| B | 0 | 153 | 64141 | 426.33 | 691 | 665 | 148.9 |
| C | 12 | 252 | 156384 | 829.23 | 690 | 685 | 187.8 |
| C | 14 | 96 | 86565 | 457.38 | 690 | 685 | 187.8 |
| C | 6 | 223 | 44288 | 232.22 | 690 | 685 | 187.8 |
| D | 12 | 110 | 11168686 | 75418.34 | 522 | 499 | 148.1 |
| D | 7 | 222 | 271174 | 1827.86 | 522 | 499 | 148.1 |
| D | 8 | 240 | 74152 | 497.38 | 522 | 499 | 148.1 |
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 |  |