Observation information
- date-obs: 2025-09-23
- time-obs: 09:18:30.613400000
- date-end: 2025-09-23
- time-end: 11:43:19.591100000
- obs_id: A14_041T01_9000006510
- exposure: 4496.80253667
- 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_54032cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54032cztM0_level2_quad_clean.evt
|
| Size (bytes) | 700,637,760 | 93,939,840 |
| Size | 668.2 MB
| 89.6 MB
|
| Events in quadrant A | 4,025,597 | 662,809 |
| Events in quadrant B | 3,818,806 | 732,327 |
| Events in quadrant C | 5,897,289 | 561,864 |
| Events in quadrant D | 11,632,965 | 383,861 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 150 | 0 |
| B | 0 | 150 | 0 |
| C | 0 | 150 | 0 |
| D | 0 | 150 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 17105 | 2 |
| B | 0 | 16233 | 2 |
| C | 0 | 22487 | 3 |
| D | 0 | 39579 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7224 | 343 | 4.748062% |
| B | 7224 | 247 | 3.419158% |
| C | 7224 | 1002 | 13.870432% |
| D | 7224 | 2935 | 40.628461% |
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 | 8689 | 7225 | 215 | 215 | 2.47% | 2.98% |  |
| B | 8689 | 7226 | 92 | 92 | 1.06% | 1.27% |  |
| C | 8689 | 7226 | 843 | 843 | 9.70% | 11.67% |  |
| D | 8688 | 7225 | 2488 | 2488 | 28.64% | 34.44% |  |
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 | 807697 | 4290.59 | 766 | 746 | 188.1 |
| A | 0 | 8 | 100857 | 532.29 | 766 | 746 | 188.1 |
| A | 4 | 249 | 25771 | 133.06 | 766 | 746 | 188.1 |
| B | 5 | 236 | 310585 | 1898.93 | 762 | 734 | 163.2 |
| B | 0 | 213 | 125334 | 763.62 | 762 | 734 | 163.2 |
| B | 7 | 252 | 42324 | 254.89 | 762 | 734 | 163.2 |
| C | 4 | 5 | 1246506 | 6329.35 | 709 | 700 | 196.8 |
| C | 12 | 249 | 1189949 | 6042.01 | 709 | 700 | 196.8 |
| C | 9 | 53 | 216005 | 1093.86 | 709 | 700 | 196.8 |
| D | 8 | 176 | 7116152 | 43864.66 | 580 | 555 | 162.2 |
| D | 2 | 165 | 812331 | 5004.26 | 580 | 555 | 162.2 |
| D | 3 | 12 | 715353 | 4406.43 | 580 | 555 | 162.2 |
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 |  |