Observation information
- date-obs: 2026-06-29
- time-obs: 02:21:48.900600000
- date-end: 2026-06-29
- time-end: 04:45:52.873200000
- obs_id: A14_042T02_9000006586
- exposure: 2398.67627048
- 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_58174cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58174cztM0_level2_quad_clean.evt
|
| Size (bytes) | 763,001,280 | 84,830,400 |
| Size | 727.7 MB
| 80.9 MB
|
| Events in quadrant A | 3,246,539 | 662,516 |
| Events in quadrant B | 13,810,921 | 250,259 |
| Events in quadrant C | 3,195,419 | 629,912 |
| Events in quadrant D | 7,457,049 | 545,838 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17 | 0 |
| B | 0 | 17 | 0 |
| C | 0 | 17 | 0 |
| D | 0 | 17 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14270 | 2 |
| B | 0 | 45706 | 8 |
| C | 0 | 14542 | 2 |
| D | 0 | 26929 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6879 | 75 | 1.090275% |
| B | 6878 | 4876 | 70.892701% |
| C | 6878 | 65 | 0.945042% |
| D | 6879 | 681 | 9.899695% |
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 | 8644 | 6881 | 9 | 9 | 0.10% | 0.13% |  |
| B | 8643 | 6880 | 3911 | 3911 | 45.25% | 56.85% |  |
| C | 8643 | 6880 | 16 | 16 | 0.19% | 0.23% |  |
| D | 8644 | 6881 | 661 | 661 | 7.65% | 9.61% |  |
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 | 14 | 147924 | 774.89 | 770 | 749 | 189.9 |
| A | 11 | 3 | 64083 | 333.46 | 770 | 749 | 189.9 |
| A | 4 | 3 | 19592 | 99.21 | 770 | 749 | 189.9 |
| B | 10 | 128 | 11557326 | 103243.7 | 521 | 502 | 111.9 |
| B | 0 | 79 | 64210 | 569.14 | 521 | 502 | 111.9 |
| B | 10 | 247 | 35877 | 316.03 | 521 | 502 | 111.9 |
| C | 6 | 223 | 104770 | 511.66 | 749 | 743 | 203.3 |
| C | 11 | 244 | 30776 | 147.72 | 749 | 743 | 203.3 |
| C | 12 | 250 | 27278 | 130.51 | 749 | 743 | 203.3 |
| D | 12 | 110 | 3580262 | 17740.53 | 713 | 683 | 201.8 |
| D | 8 | 240 | 373244 | 1846.43 | 713 | 683 | 201.8 |
| D | 8 | 160 | 219891 | 1086.4 | 713 | 683 | 201.8 |
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 |  |