Observation information
- date-obs: 2026-07-13
- time-obs: 16:51:41.047700000
- date-end: 2026-07-13
- time-end: 18:59:39.961800000
- obs_id: A14_045T01_9000006590
- exposure: 5943.64091063
- sourceid: NGC 4383
- observer: ujjwalkrishnan
- ra_pnt: 186.3563
- dec_pnt: 16.47013
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_045T01_9000006590_58391cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58391cztM0_level2_quad_clean.evt
|
| Size (bytes) | 507,813,120 | 96,860,160 |
| Size | 484.3 MB
| 92.4 MB
|
| Events in quadrant A | 3,509,466 | 646,092 |
| Events in quadrant B | 4,119,708 | 681,117 |
| Events in quadrant C | 3,252,172 | 621,537 |
| Events in quadrant D | 7,384,869 | 507,266 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 138 | 0 |
| B | 0 | 138 | 0 |
| C | 0 | 138 | 0 |
| D | 0 | 138 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15184 | 1 |
| B | 0 | 16996 | 1 |
| C | 0 | 14594 | 1 |
| D | 0 | 26726 | 1 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 9 | 0 |
| B | 0 | 9 | 0 |
| C | 0 | 9 | 0 |
| D | 0 | 9 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6840 | 45 | 0.657895% |
| B | 6840 | 220 | 3.216374% |
| C | 6840 | 31 | 0.453216% |
| D | 6840 | 1054 | 15.409357% |
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 | 7680 | 6841 | 28 | 28 | 0.36% | 0.41% |  |
| B | 7680 | 6841 | 120 | 120 | 1.56% | 1.75% |  |
| C | 7680 | 6841 | 25 | 25 | 0.33% | 0.37% |  |
| D | 7680 | 6841 | 1076 | 1076 | 14.01% | 15.73% |  |
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 | 2 | 143 | 139762 | 753.95 | 739 | 720 | 184.4 |
| A | 4 | 249 | 112363 | 605.38 | 739 | 720 | 184.4 |
| A | 3 | 244 | 77733 | 417.6 | 739 | 720 | 184.4 |
| B | 5 | 172 | 366979 | 2346.71 | 727 | 700 | 156.1 |
| B | 0 | 153 | 172603 | 1101.36 | 727 | 700 | 156.1 |
| B | 6 | 255 | 150277 | 958.32 | 727 | 700 | 156.1 |
| C | 15 | 230 | 128985 | 641.69 | 722 | 714 | 199.9 |
| C | 4 | 5 | 93328 | 463.31 | 722 | 714 | 199.9 |
| C | 14 | 245 | 72489 | 359.06 | 722 | 714 | 199.9 |
| D | 5 | 113 | 3780043 | 19172.81 | 685 | 653 | 197.1 |
| D | 2 | 249 | 308922 | 1563.85 | 685 | 653 | 197.1 |
| D | 11 | 129 | 302442 | 1530.97 | 685 | 653 | 197.1 |
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 |  |