Observation information
- date-obs: 2026-06-24
- time-obs: 09:54:57.367100000
- date-end: 2026-06-24
- time-end: 12:04:19.015100000
- obs_id: A14_042T02_9000006586
- exposure: 3030.32237577
- 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_58105cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58105cztM0_level2_quad_clean.evt
|
| Size (bytes) | 708,200,640 | 88,655,040 |
| Size | 675.4 MB
| 84.5 MB
|
| Events in quadrant A | 3,298,145 | 696,396 |
| Events in quadrant B | 8,946,598 | 569,648 |
| Events in quadrant C | 3,453,221 | 657,030 |
| Events in quadrant D | 10,004,975 | 301,344 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14182 | 2 |
| B | 0 | 31263 | 2 |
| C | 0 | 14664 | 2 |
| D | 0 | 34157 | 3 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6598 | 105 | 1.591391% |
| B | 6598 | 1934 | 29.311913% |
| C | 6598 | 103 | 1.561079% |
| D | 6597 | 3617 | 54.827952% |
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 | 7763 | 6598 | 20 | 20 | 0.26% | 0.30% |  |
| B | 7763 | 6598 | 1583 | 1583 | 20.39% | 23.99% |  |
| C | 7763 | 6598 | 35 | 35 | 0.45% | 0.53% |  |
| D | 7761 | 6596 | 2836 | 2836 | 36.54% | 43.00% |  |
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 | 149207 | 761.08 | 787 | 767 | 195.0 |
| A | 3 | 61 | 31682 | 158.51 | 787 | 767 | 195.0 |
| A | 4 | 3 | 26261 | 130.71 | 787 | 767 | 195.0 |
| B | 10 | 128 | 3391166 | 22926.75 | 688 | 663 | 147.9 |
| B | 5 | 172 | 2128755 | 14390.26 | 688 | 663 | 147.9 |
| B | 2 | 249 | 291807 | 1968.73 | 688 | 663 | 147.9 |
| C | 12 | 252 | 218728 | 1060.56 | 752 | 745 | 205.5 |
| C | 9 | 38 | 119895 | 579.7 | 752 | 745 | 205.5 |
| C | 15 | 208 | 55836 | 268.04 | 752 | 745 | 205.5 |
| D | 12 | 110 | 7263137 | 47999.53 | 532 | 509 | 151.3 |
| D | 8 | 160 | 287788 | 1898.66 | 532 | 509 | 151.3 |
| D | 3 | 224 | 158086 | 1041.44 | 532 | 509 | 151.3 |
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 |  |