Observation information
- date-obs: 2025-09-26
- time-obs: 12:13:46.928000000
- date-end: 2025-09-26
- time-end: 14:17:13.908300000
- obs_id: A14_041T01_9000006510
- exposure: 5717.75214237
- sourceid: 1ES 1927+654
- observer: savithri
- ra_pnt: 291.8314
- dec_pnt: 65.56506
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_041T01_9000006510_54079cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54079cztM0_level2_quad_clean.evt
|
| Size (bytes) | 481,553,280 | 92,805,120 |
| Size | 459.2 MB
| 88.5 MB
|
| Events in quadrant A | 3,926,229 | 610,455 |
| Events in quadrant B | 3,582,865 | 681,501 |
| Events in quadrant C | 4,075,310 | 568,256 |
| Events in quadrant D | 5,751,692 | 510,346 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 16040 | 1 |
| B | 0 | 15105 | 1 |
| C | 0 | 16411 | 1 |
| D | 0 | 21439 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6297 | 389 | 6.177545% |
| B | 6298 | 178 | 2.826294% |
| C | 6297 | 331 | 5.256471% |
| D | 6297 | 629 | 9.988884% |
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 | 7407 | 6298 | 271 | 271 | 3.66% | 4.30% |  |
| B | 7408 | 6299 | 96 | 96 | 1.30% | 1.52% |  |
| C | 7407 | 6298 | 265 | 265 | 3.58% | 4.21% |  |
| D | 7407 | 6298 | 607 | 607 | 8.19% | 9.64% |  |
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 | 15 | 174 | 1076561 | 6416.97 | 672 | 656 | 167.7 |
| A | 14 | 235 | 96512 | 571.71 | 672 | 656 | 167.7 |
| A | 0 | 8 | 73662 | 435.43 | 672 | 656 | 167.7 |
| B | 5 | 236 | 290411 | 2046.15 | 672 | 649 | 141.6 |
| B | 0 | 213 | 122066 | 857.39 | 672 | 649 | 141.6 |
| B | 4 | 81 | 114621 | 804.81 | 672 | 649 | 141.6 |
| C | 13 | 3 | 695074 | 3910.12 | 648 | 640 | 177.6 |
| C | 9 | 38 | 320623 | 1801.71 | 648 | 640 | 177.6 |
| C | 12 | 2 | 136683 | 766.01 | 648 | 640 | 177.6 |
| D | 8 | 176 | 1359334 | 7484.32 | 636 | 608 | 181.5 |
| D | 3 | 12 | 935169 | 5147.87 | 636 | 608 | 181.5 |
| D | 2 | 172 | 679132 | 3737.54 | 636 | 608 | 181.5 |
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 |  |