Observation information
- date-obs: 2026-06-30
- time-obs: 03:00:23.645100000
- date-end: 2026-06-30
- time-end: 05:04:05.623000000
- obs_id: A14_042T02_9000006586
- exposure: 5580.12592876
- 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_58190cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58190cztM0_level2_quad_clean.evt
|
| Size (bytes) | 455,146,560 | 92,931,840 |
| Size | 434.1 MB
| 88.6 MB
|
| Events in quadrant A | 2,885,399 | 626,411 |
| Events in quadrant B | 4,482,006 | 659,872 |
| Events in quadrant C | 2,999,648 | 591,126 |
| Events in quadrant D | 5,981,229 | 487,651 |
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 | 13210 | 1 |
| B | 0 | 17603 | 1 |
| C | 0 | 13631 | 1 |
| D | 0 | 22322 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6427 | 51 | 0.793527% |
| B | 6427 | 250 | 3.889840% |
| C | 6427 | 99 | 1.540377% |
| D | 6428 | 933 | 14.514624% |
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 | 7422 | 6428 | 4 | 4 | 0.05% | 0.06% |  |
| B | 7422 | 6428 | 87 | 87 | 1.17% | 1.35% |  |
| C | 7422 | 6428 | 48 | 48 | 0.65% | 0.75% |  |
| D | 7423 | 6429 | 789 | 789 | 10.63% | 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 | 13 | 248 | 38352 | 215.04 | 718 | 702 | 175.1 |
| A | 4 | 3 | 31010 | 173.11 | 718 | 702 | 175.1 |
| A | 3 | 245 | 17982 | 98.7 | 718 | 702 | 175.1 |
| B | 10 | 128 | 1345369 | 8960.59 | 703 | 678 | 150.1 |
| B | 0 | 153 | 78834 | 520.81 | 703 | 678 | 150.1 |
| B | 4 | 201 | 61285 | 403.87 | 703 | 678 | 150.1 |
| C | 6 | 223 | 175778 | 912.88 | 697 | 688 | 191.8 |
| C | 12 | 252 | 40243 | 206.23 | 697 | 688 | 191.8 |
| C | 15 | 201 | 28609 | 145.57 | 697 | 688 | 191.8 |
| D | 8 | 160 | 1226320 | 6717.09 | 649 | 621 | 182.5 |
| D | 8 | 240 | 901961 | 4939.53 | 649 | 621 | 182.5 |
| D | 12 | 110 | 802473 | 4394.32 | 649 | 621 | 182.5 |
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 |  |