Observation information
- date-obs: 2026-07-01
- time-obs: 04:45:35.379500000
- date-end: 2026-07-01
- time-end: 07:00:03.355500000
- obs_id: A14_042T02_9000006586
- exposure: 5538.97443587
- 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_58206cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58206cztM0_level2_quad_clean.evt
|
| Size (bytes) | 556,450,560 | 94,691,520 |
| Size | 530.7 MB
| 90.3 MB
|
| Events in quadrant A | 2,979,174 | 660,607 |
| Events in quadrant B | 6,961,876 | 620,450 |
| Events in quadrant C | 3,081,571 | 625,692 |
| Events in quadrant D | 7,073,674 | 509,271 |
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 | 132 | 0 |
| B | 0 | 132 | 0 |
| C | 0 | 132 | 0 |
| D | 0 | 132 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13449 | 2 |
| B | 0 | 25140 | 2 |
| C | 0 | 13816 | 3 |
| D | 0 | 25458 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6466 | 85 | 1.314569% |
| B | 6466 | 1060 | 16.393443% |
| C | 6465 | 92 | 1.423047% |
| D | 6465 | 1102 | 17.045630% |
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 | 7606 | 6466 | 16 | 16 | 0.21% | 0.25% |  |
| B | 7606 | 6466 | 737 | 737 | 9.69% | 11.40% |  |
| C | 7605 | 6465 | 29 | 29 | 0.38% | 0.45% |  |
| D | 7605 | 6465 | 956 | 956 | 12.57% | 14.79% |  |
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 | 78251 | 421.4 | 742 | 722 | 184.0 |
| A | 4 | 3 | 11767 | 60.03 | 742 | 722 | 184.0 |
| A | 13 | 254 | 9278 | 46.51 | 742 | 722 | 184.0 |
| B | 10 | 128 | 3019121 | 20374.7 | 691 | 665 | 148.1 |
| B | 2 | 249 | 341803 | 2302.7 | 691 | 665 | 148.1 |
| B | 5 | 185 | 315866 | 2127.62 | 691 | 665 | 148.1 |
| C | 9 | 237 | 77479 | 392.08 | 718 | 710 | 195.8 |
| C | 12 | 252 | 73225 | 370.35 | 718 | 710 | 195.8 |
| C | 4 | 239 | 56275 | 283.78 | 718 | 710 | 195.8 |
| D | 12 | 110 | 4115762 | 21430.22 | 679 | 650 | 192.0 |
| D | 8 | 240 | 104870 | 542.75 | 679 | 650 | 192.0 |
| D | 8 | 160 | 42279 | 216.79 | 679 | 650 | 192.0 |
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 |  |