Observation information
- date-obs: 2026-06-23
- time-obs: 14:50:43.227700000
- date-end: 2026-06-23
- time-end: 16:56:50.207000000
- obs_id: A14_042T02_9000006586
- exposure: 5172.23751533
- 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_58093cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58093cztM0_level2_quad_clean.evt
|
| Size (bytes) | 633,064,320 | 93,706,560 |
| Size | 603.7 MB
| 89.4 MB
|
| Events in quadrant A | 3,128,538 | 662,031 |
| Events in quadrant B | 9,058,529 | 556,260 |
| Events in quadrant C | 3,336,106 | 627,209 |
| Events in quadrant D | 7,399,452 | 531,755 |
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 | 14140 | 1 |
| B | 0 | 31578 | 1 |
| C | 0 | 14725 | 1 |
| D | 0 | 26557 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6602 | 98 | 1.484399% |
| B | 6603 | 1702 | 25.776162% |
| C | 6603 | 69 | 1.044980% |
| D | 6602 | 824 | 12.481066% |
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 | 7567 | 6603 | 20 | 20 | 0.26% | 0.30% |  |
| B | 7568 | 6603 | 1248 | 1248 | 16.49% | 18.90% |  |
| C | 7568 | 6604 | 33 | 33 | 0.44% | 0.50% |  |
| D | 7567 | 6603 | 810 | 810 | 10.70% | 12.27% |  |
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 | 10 | 251 | 114691 | 612.82 | 753 | 734 | 186.0 |
| A | 7 | 112 | 41541 | 219.45 | 753 | 734 | 186.0 |
| A | 13 | 248 | 23404 | 121.91 | 753 | 734 | 186.0 |
| B | 10 | 128 | 5335843 | 36756.62 | 673 | 648 | 145.1 |
| B | 5 | 172 | 724786 | 4988.92 | 673 | 648 | 145.1 |
| B | 0 | 156 | 83706 | 572.22 | 673 | 648 | 145.1 |
| C | 12 | 252 | 118686 | 592.69 | 723 | 716 | 199.0 |
| C | 6 | 223 | 105554 | 526.71 | 723 | 716 | 199.0 |
| C | 14 | 254 | 102158 | 509.65 | 723 | 716 | 199.0 |
| D | 12 | 110 | 2136191 | 10792.91 | 694 | 663 | 197.9 |
| D | 3 | 224 | 658680 | 3325.6 | 694 | 663 | 197.9 |
| D | 8 | 160 | 626665 | 3163.8 | 694 | 663 | 197.9 |
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 |  |