Observation information
- date-obs: 2026-07-13
- time-obs: 04:32:13.680000000
- date-end: 2026-07-13
- time-end: 06:49:21.052400000
- obs_id: A14_045T01_9000006590
- exposure: 5939.97455871
- 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_58384cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58384cztM0_level2_quad_clean.evt
|
| Size (bytes) | 492,180,480 | 100,117,440 |
| Size | 469.4 MB
| 95.5 MB
|
| Events in quadrant A | 3,368,758 | 668,747 |
| Events in quadrant B | 5,714,298 | 641,416 |
| Events in quadrant C | 3,530,666 | 646,026 |
| Events in quadrant D | 5,062,897 | 589,506 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14943 | 2 |
| B | 0 | 21598 | 2 |
| C | 0 | 15494 | 2 |
| D | 0 | 19843 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6973 | 190 | 2.724796% |
| B | 6973 | 1048 | 15.029399% |
| C | 6973 | 164 | 2.351929% |
| D | 6973 | 302 | 4.330991% |
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 | 7753 | 6973 | 18 | 18 | 0.23% | 0.26% |  |
| B | 7753 | 6973 | 738 | 738 | 9.52% | 10.58% |  |
| C | 7753 | 6973 | 62 | 62 | 0.80% | 0.89% |  |
| D | 7753 | 6973 | 208 | 208 | 2.68% | 2.98% |  |
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 | 12 | 80 | 100957 | 509.65 | 806 | 785 | 196.5 |
| A | 12 | 114 | 30735 | 152.38 | 806 | 785 | 196.5 |
| A | 2 | 143 | 24686 | 121.6 | 806 | 785 | 196.5 |
| B | 6 | 255 | 2076178 | 12929.43 | 745 | 718 | 160.5 |
| B | 2 | 249 | 245298 | 1523.65 | 745 | 718 | 160.5 |
| B | 0 | 153 | 151793 | 941.15 | 745 | 718 | 160.5 |
| C | 4 | 5 | 175477 | 822.68 | 779 | 773 | 212.4 |
| C | 6 | 223 | 127610 | 597.27 | 779 | 773 | 212.4 |
| C | 14 | 245 | 75342 | 351.14 | 779 | 773 | 212.4 |
| D | 12 | 110 | 1089701 | 4970.63 | 772 | 739 | 219.1 |
| D | 12 | 128 | 206125 | 937.5 | 772 | 739 | 219.1 |
| D | 2 | 249 | 150333 | 682.83 | 772 | 739 | 219.1 |
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 |  |