Observation information
- date-obs: 2026-07-01
- time-obs: 06:38:16.359100000
- date-end: 2026-07-01
- time-end: 08:44:34.336900000
- obs_id: A14_042T02_9000006586
- exposure: 6056.46477038
- 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_58207cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58207cztM0_level2_quad_clean.evt
|
| Size (bytes) | 429,266,880 | 99,169,920 |
| Size | 409.4 MB
| 94.6 MB
|
| Events in quadrant A | 2,967,678 | 662,732 |
| Events in quadrant B | 4,854,190 | 696,105 |
| Events in quadrant C | 3,037,500 | 628,893 |
| Events in quadrant D | 4,531,816 | 567,705 |
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 | 130 | 0 |
| B | 0 | 130 | 0 |
| C | 0 | 130 | 0 |
| D | 0 | 130 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13252 | 1 |
| B | 0 | 18786 | 1 |
| C | 0 | 13600 | 1 |
| D | 0 | 17758 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6418 | 85 | 1.324400% |
| B | 6419 | 284 | 4.424365% |
| C | 6419 | 87 | 1.355351% |
| D | 6419 | 397 | 6.184764% |
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 | 7578 | 6418 | 10 | 10 | 0.13% | 0.16% |  |
| B | 7579 | 6419 | 139 | 139 | 1.83% | 2.17% |  |
| C | 7579 | 6419 | 13 | 13 | 0.17% | 0.20% |  |
| D | 7579 | 6419 | 300 | 300 | 3.96% | 4.67% |  |
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 | 245 | 26143 | 137.16 | 748 | 729 | 185.3 |
| A | 0 | 117 | 19051 | 98.89 | 748 | 729 | 185.3 |
| A | 13 | 248 | 14473 | 74.18 | 748 | 729 | 185.3 |
| B | 10 | 128 | 1534979 | 9969.37 | 725 | 698 | 153.9 |
| B | 4 | 201 | 149773 | 968.65 | 725 | 698 | 153.9 |
| B | 5 | 185 | 114114 | 736.95 | 725 | 698 | 153.9 |
| C | 12 | 252 | 99432 | 493.72 | 726 | 717 | 199.9 |
| C | 15 | 208 | 57340 | 283.2 | 726 | 717 | 199.9 |
| C | 9 | 237 | 32526 | 159.09 | 726 | 717 | 199.9 |
| D | 12 | 110 | 1265482 | 6247.47 | 713 | 681 | 202.5 |
| D | 7 | 222 | 135715 | 667.0 | 713 | 681 | 202.5 |
| D | 3 | 12 | 67641 | 330.75 | 713 | 681 | 202.5 |
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 |  |