Observation information
- date-obs: 2026-07-13
- time-obs: 11:53:08.168100000
- date-end: 2026-07-13
- time-end: 20:43:46.961800000
- obs_id: A14_045T01_9000006590
- exposure: 25588.8496302
- 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_58392cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58392cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,299,403,520 | 404,760,960 |
| Size | 2.1 GB
| 386.0 MB
|
| Events in quadrant A | 15,845,416 | 2,726,037 |
| Events in quadrant B | 24,731,006 | 2,650,135 |
| Events in quadrant C | 15,827,037 | 2,579,504 |
| Events in quadrant D | 26,483,372 | 2,313,009 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 586 | 0 |
| B | 0 | 586 | 0 |
| C | 0 | 586 | 0 |
| D | 0 | 586 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 67797 | 5 |
| B | 0 | 93408 | 5 |
| C | 0 | 68069 | 5 |
| D | 0 | 98486 | 8 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 29 | 0 |
| B | 0 | 29 | 0 |
| C | 0 | 29 | 0 |
| D | 0 | 29 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 28879 | 658 | 2.278472% |
| B | 28880 | 3577 | 12.385734% |
| C | 28880 | 932 | 3.227147% |
| D | 28879 | 2546 | 8.816095% |
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 | 31838 | 28882 | 363 | 363 | 1.14% | 1.26% |  |
| B | 31839 | 28882 | 2476 | 2476 | 7.78% | 8.57% |  |
| C | 31839 | 28883 | 793 | 793 | 2.49% | 2.75% |  |
| D | 31838 | 28883 | 2594 | 2594 | 8.15% | 8.98% |  |
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 | 249 | 1205002 | 1541.21 | 3174 | 3091 | 779.8 |
| A | 2 | 143 | 502699 | 640.65 | 3174 | 3091 | 779.8 |
| A | 12 | 114 | 417629 | 531.56 | 3174 | 3091 | 779.8 |
| B | 5 | 172 | 8224460 | 12631.58 | 3047 | 2928 | 650.9 |
| B | 6 | 255 | 957370 | 1466.41 | 3047 | 2928 | 650.9 |
| B | 0 | 153 | 691287 | 1057.6 | 3047 | 2928 | 650.9 |
| C | 6 | 223 | 1645821 | 1955.34 | 3063 | 3041 | 840.2 |
| C | 15 | 147 | 705718 | 836.37 | 3063 | 3041 | 840.2 |
| C | 4 | 5 | 404557 | 477.91 | 3063 | 3041 | 840.2 |
| D | 5 | 113 | 7938992 | 9333.91 | 2992 | 2855 | 850.2 |
| D | 2 | 249 | 2832249 | 3327.73 | 2992 | 2855 | 850.2 |
| D | 11 | 129 | 2064571 | 2424.84 | 2992 | 2855 | 850.2 |
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 |  |