Observation information
- date-obs: 2024-09-14
- time-obs: 23:13:39.111000000
- date-end: 2024-09-15
- time-end: 01:43:26.097500000
- obs_id: A13_081T01_9000006428
- exposure: 6628.38526857
- 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/AS1A13_081T01_9000006428_48488cztM0_level2.fits
| modeM0/AS1A13_081T01_9000006428_48488cztM0_level2_quad_clean.evt
|
| Size (bytes) | 457,176,960 | 110,309,760 |
| Size | 436.0 MB
| 105.2 MB
|
| Events in quadrant A | 7,223,441 | 716,419 |
| Events in quadrant B | 3,142,602 | 758,843 |
| Events in quadrant C | 2,895,053 | 720,772 |
| Events in quadrant D | 3,124,517 | 661,381 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26052 | 2 |
| B | 0 | 14615 | 2 |
| C | 0 | 14142 | 2 |
| D | 0 | 14816 | 2 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 20 | 0 |
| B | 0 | 20 | 0 |
| C | 0 | 20 | 0 |
| D | 0 | 20 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 144 | 0 |
| B | 0 | 144 | 0 |
| C | 0 | 144 | 0 |
| D | 0 | 144 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6922 | 229 | 3.308292% |
| B | 6923 | 60 | 0.866676% |
| C | 6923 | 29 | 0.418894% |
| D | 6923 | 42 | 0.606673% |
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 | 8987 | 6923 | 137 | 137 | 1.52% | 1.98% |  |
| B | 8988 | 6924 | 15 | 15 | 0.17% | 0.22% |  |
| C | 8988 | 6925 | 9 | 9 | 0.10% | 0.13% |  |
| D | 8988 | 6925 | 41 | 41 | 0.46% | 0.59% |  |
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 | 10 | 83 | 4307722 | 28836.86 | 720 | 705 | 149.4 |
| A | 12 | 189 | 114558 | 762.28 | 720 | 705 | 149.4 |
| A | 13 | 254 | 12588 | 79.56 | 720 | 705 | 149.4 |
| B | 12 | 16 | 122975 | 853.49 | 731 | 707 | 143.3 |
| B | 0 | 186 | 46453 | 319.33 | 731 | 707 | 143.3 |
| B | 5 | 255 | 24847 | 168.51 | 731 | 707 | 143.3 |
| C | 1 | 3 | 29187 | 167.35 | 719 | 722 | 170.1 |
| C | 3 | 233 | 27005 | 154.52 | 719 | 722 | 170.1 |
| C | 14 | 254 | 25584 | 146.17 | 719 | 722 | 170.1 |
| D | 5 | 171 | 155832 | 870.51 | 712 | 689 | 178.2 |
| D | 10 | 199 | 63367 | 351.69 | 712 | 689 | 178.2 |
| D | 2 | 249 | 58617 | 325.03 | 712 | 689 | 178.2 |
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 |  |