Observation information
- date-obs: 2026-07-15
- time-obs: 17:20:32.596500000
- date-end: 2026-07-15
- time-end: 19:29:03.570600000
- obs_id: A14_045T01_9000006590
- exposure: 6025.03580552
- 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_58421cztM0_level2.fits
| modeM0/AS1A14_045T01_9000006590_58421cztM0_level2_quad_clean.evt
|
| Size (bytes) | 525,009,600 | 93,735,360 |
| Size | 500.7 MB
| 89.4 MB
|
| Events in quadrant A | 3,307,163 | 627,300 |
| Events in quadrant B | 4,366,235 | 636,474 |
| Events in quadrant C | 6,760,310 | 564,670 |
| Events in quadrant D | 4,492,090 | 552,424 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 134 | 0 |
| B | 0 | 134 | 0 |
| C | 0 | 134 | 0 |
| D | 0 | 134 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14669 | 2 |
| B | 0 | 17482 | 2 |
| C | 0 | 24772 | 2 |
| D | 0 | 17898 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6553 | 107 | 1.632840% |
| B | 6553 | 462 | 7.050206% |
| C | 6553 | 550 | 8.393102% |
| D | 6553 | 337 | 5.142683% |
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 | 7543 | 6554 | 77 | 77 | 1.02% | 1.17% |  |
| B | 7543 | 6554 | 375 | 375 | 4.97% | 5.72% |  |
| C | 7543 | 6554 | 354 | 354 | 4.69% | 5.40% |  |
| D | 7543 | 6554 | 275 | 275 | 3.65% | 4.20% |  |
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 | 236878 | 1332.44 | 711 | 692 | 177.3 |
| A | 4 | 249 | 112214 | 629.15 | 711 | 692 | 177.3 |
| A | 1 | 7 | 67263 | 375.56 | 711 | 692 | 177.3 |
| B | 5 | 185 | 967101 | 6614.9 | 682 | 658 | 146.1 |
| B | 4 | 201 | 187332 | 1277.71 | 682 | 658 | 146.1 |
| B | 6 | 255 | 179820 | 1226.29 | 682 | 658 | 146.1 |
| C | 9 | 38 | 3573583 | 19173.53 | 673 | 667 | 186.3 |
| C | 5 | 10 | 130163 | 694.92 | 673 | 667 | 186.3 |
| C | 2 | 12 | 120021 | 640.5 | 673 | 667 | 186.3 |
| D | 8 | 240 | 1292959 | 6721.98 | 674 | 645 | 192.3 |
| D | 2 | 249 | 128558 | 665.34 | 674 | 645 | 192.3 |
| D | 12 | 248 | 128056 | 662.73 | 674 | 645 | 192.3 |
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 |  |