Observation information
- date-obs: 2026-07-15
- time-obs: 03:53:34.697600000
- date-end: 2026-07-15
- time-end: 17:47:10.592500000
- obs_id: A14_045T01_9000006590
- exposure: 26526.9426419
- 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_58420cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58420cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,080,745,280 | 404,657,280 |
| Size | 1.9 GB
| 385.9 MB
|
| Events in quadrant A | 15,643,200 | 2,670,209 |
| Events in quadrant B | 16,934,800 | 2,788,853 |
| Events in quadrant C | 22,185,036 | 2,496,014 |
| Events in quadrant D | 20,072,766 | 2,348,858 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 580 | 0 |
| B | 0 | 580 | 0 |
| C | 0 | 580 | 0 |
| D | 0 | 580 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 66047 | 5 |
| B | 0 | 70017 | 4 |
| C | 0 | 85777 | 4 |
| D | 0 | 78946 | 4 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 24 | 0 |
| B | 0 | 24 | 0 |
| C | 0 | 24 | 0 |
| D | 0 | 24 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 28313 | 619 | 2.186275% |
| B | 28314 | 1617 | 5.710956% |
| C | 28314 | 1579 | 5.576746% |
| D | 28314 | 1438 | 5.078760% |
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 | 50016 | 28320 | 143 | 143 | 0.29% | 0.50% |  |
| B | 50016 | 28320 | 882 | 882 | 1.76% | 3.11% |  |
| C | 50016 | 28321 | 962 | 962 | 1.92% | 3.40% |  |
| D | 50016 | 28321 | 1065 | 1065 | 2.13% | 3.76% |  |
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 | 2017720 | 2623.74 | 3136 | 3056 | 767.9 |
| A | 12 | 114 | 483288 | 625.42 | 3136 | 3056 | 767.9 |
| A | 10 | 251 | 200369 | 256.97 | 3136 | 3056 | 767.9 |
| B | 5 | 185 | 1233246 | 1900.39 | 3034 | 2915 | 647.4 |
| B | 5 | 172 | 615282 | 945.87 | 3034 | 2915 | 647.4 |
| B | 4 | 201 | 583672 | 897.05 | 3034 | 2915 | 647.4 |
| C | 9 | 38 | 6213656 | 7670.46 | 2991 | 2965 | 809.7 |
| C | 5 | 10 | 2438432 | 3007.9 | 2991 | 2965 | 809.7 |
| C | 6 | 223 | 435679 | 534.42 | 2991 | 2965 | 809.7 |
| D | 8 | 240 | 3523816 | 4166.85 | 2999 | 2865 | 845.0 |
| D | 12 | 110 | 2421803 | 2862.68 | 2999 | 2865 | 845.0 |
| D | 11 | 129 | 813847 | 959.75 | 2999 | 2865 | 845.0 |
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 |  |