Observation information
- date-obs: 2026-06-29
- time-obs: 19:47:20.722800000
- date-end: 2026-06-30
- time-end: 01:33:58.662200000
- obs_id: A14_042T02_9000006586
- exposure: 11451.9705215
- 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_58187cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58187cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,791,011,520 | 252,901,440 |
| Size | 1.7 GB
| 241.2 MB
|
| Events in quadrant A | 8,439,470 | 1,801,094 |
| Events in quadrant B | 13,211,040 | 1,888,858 |
| Events in quadrant C | 9,006,723 | 1,716,803 |
| Events in quadrant D | 34,154,592 | 924,726 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 392 | 0 |
| B | 0 | 392 | 0 |
| C | 0 | 392 | 0 |
| D | 0 | 392 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 39431 | 3 |
| B | 0 | 52488 | 4 |
| C | 0 | 41126 | 3 |
| D | 0 | 114745 | 3 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 19228 | 104 | 0.540878% |
| B | 19227 | 694 | 3.609507% |
| C | 19228 | 117 | 0.608488% |
| D | 19228 | 8499 | 44.201165% |
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 | 20798 | 19231 | 4 | 4 | 0.02% | 0.02% |  |
| B | 20797 | 19230 | 177 | 177 | 0.85% | 0.92% |  |
| C | 20798 | 19231 | 73 | 73 | 0.35% | 0.38% |  |
| D | 20798 | 19229 | 8448 | 8448 | 40.62% | 43.93% |  |
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 | 4 | 3 | 80948 | 150.42 | 2128 | 2072 | 524.4 |
| A | 3 | 245 | 60411 | 111.26 | 2128 | 2072 | 524.4 |
| A | 11 | 3 | 29400 | 52.12 | 2128 | 2072 | 524.4 |
| B | 10 | 128 | 3775574 | 8449.46 | 2079 | 1997 | 446.6 |
| B | 2 | 249 | 234464 | 520.52 | 2079 | 1997 | 446.6 |
| B | 0 | 153 | 171972 | 380.59 | 2079 | 1997 | 446.6 |
| C | 12 | 252 | 298502 | 527.47 | 2055 | 2036 | 562.1 |
| C | 14 | 245 | 174128 | 306.18 | 2055 | 2036 | 562.1 |
| C | 15 | 201 | 166062 | 291.83 | 2055 | 2036 | 562.1 |
| D | 12 | 110 | 23428863 | 49359.61 | 1663 | 1591 | 474.6 |
| D | 6 | 239 | 1271176 | 2674.93 | 1663 | 1591 | 474.6 |
| D | 8 | 160 | 928397 | 1952.71 | 1663 | 1591 | 474.6 |
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 |  |