Observation information
- date-obs: 2026-06-23
- time-obs: 11:30:35.260600000
- date-end: 2026-06-23
- time-end: 13:32:33.238800000
- obs_id: A14_042T02_9000006586
- exposure: 4956.23742741
- 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_58091cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58091cztM0_level2_quad_clean.evt
|
| Size (bytes) | 579,136,320 | 90,239,040 |
| Size | 552.3 MB
| 86.1 MB
|
| Events in quadrant A | 2,853,774 | 645,155 |
| Events in quadrant B | 7,455,070 | 586,403 |
| Events in quadrant C | 2,881,248 | 606,014 |
| Events in quadrant D | 7,771,563 | 465,512 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12709 | 1 |
| B | 0 | 26580 | 1 |
| C | 0 | 12967 | 1 |
| D | 0 | 27380 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6138 | 89 | 1.449984% |
| B | 6139 | 1162 | 18.928164% |
| C | 6138 | 91 | 1.482568% |
| D | 6138 | 1395 | 22.727273% |
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 | 7318 | 6138 | 0 | 0 | 0.00% | 0.00% |  |
| B | 7319 | 6139 | 893 | 893 | 12.20% | 14.55% |  |
| C | 7318 | 6138 | 14 | 14 | 0.19% | 0.23% |  |
| D | 7318 | 6138 | 1207 | 1207 | 16.49% | 19.66% |  |
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 | 2 | 143 | 16227 | 86.58 | 718 | 700 | 179.3 |
| A | 2 | 79 | 14332 | 76.01 | 718 | 700 | 179.3 |
| A | 10 | 251 | 14099 | 74.71 | 718 | 700 | 179.3 |
| B | 10 | 128 | 4023398 | 28010.97 | 667 | 643 | 143.6 |
| B | 5 | 172 | 439189 | 3053.65 | 667 | 643 | 143.6 |
| B | 4 | 201 | 61149 | 421.31 | 667 | 643 | 143.6 |
| C | 6 | 223 | 84507 | 445.4 | 686 | 680 | 188.2 |
| C | 12 | 252 | 45047 | 235.74 | 686 | 680 | 188.2 |
| C | 15 | 201 | 35764 | 186.41 | 686 | 680 | 188.2 |
| D | 12 | 110 | 3337168 | 18496.69 | 639 | 611 | 180.4 |
| D | 3 | 224 | 1124600 | 6231.0 | 639 | 611 | 180.4 |
| D | 8 | 160 | 319986 | 1770.5 | 639 | 611 | 180.4 |
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 |  |