Observation information
- date-obs: 2025-09-22
- time-obs: 19:33:16.735400000
- date-end: 2025-09-22
- time-end: 21:44:48.703800000
- obs_id: A14_041T01_9000006510
- exposure: 4355.69381595
- 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_54024cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54024cztM0_level2_quad_clean.evt
|
| Size (bytes) | 557,421,120 | 91,342,080 |
| Size | 531.6 MB
| 87.1 MB
|
| Events in quadrant A | 3,171,958 | 640,825 |
| Events in quadrant B | 3,628,253 | 694,719 |
| Events in quadrant C | 4,010,440 | 590,077 |
| Events in quadrant D | 9,308,533 | 378,609 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 13 | 0 |
| C | 0 | 13 | 0 |
| D | 0 | 13 | 0 |
| 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 | 14555 | 2 |
| B | 0 | 15631 | 2 |
| C | 0 | 16734 | 2 |
| D | 0 | 32311 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6618 | 122 | 1.843457% |
| B | 6618 | 196 | 2.961620% |
| C | 6618 | 414 | 6.255666% |
| D | 6618 | 2389 | 36.098519% |
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 | 7643 | 6619 | 62 | 62 | 0.81% | 0.94% |  |
| B | 7643 | 6619 | 58 | 58 | 0.76% | 0.88% |  |
| C | 7643 | 6619 | 276 | 276 | 3.61% | 4.17% |  |
| D | 7643 | 6619 | 2146 | 2146 | 28.08% | 32.42% |  |
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 | 391469 | 2236.14 | 695 | 677 | 174.8 |
| A | 13 | 254 | 15039 | 82.18 | 695 | 677 | 174.8 |
| A | 3 | 14 | 14723 | 80.37 | 695 | 677 | 174.8 |
| B | 5 | 236 | 279531 | 1877.84 | 696 | 673 | 148.5 |
| B | 0 | 213 | 168360 | 1129.21 | 696 | 673 | 148.5 |
| B | 5 | 172 | 93335 | 623.99 | 696 | 673 | 148.5 |
| C | 14 | 80 | 556267 | 2969.3 | 676 | 669 | 187.1 |
| C | 13 | 3 | 304527 | 1623.92 | 676 | 669 | 187.1 |
| C | 4 | 5 | 142215 | 756.47 | 676 | 669 | 187.1 |
| D | 8 | 176 | 6444045 | 41826.96 | 536 | 510 | 154.1 |
| D | 3 | 12 | 189818 | 1228.86 | 536 | 510 | 154.1 |
| D | 2 | 165 | 146101 | 945.08 | 536 | 510 | 154.1 |
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 |  |