Observation information
- date-obs: 2025-09-25
- time-obs: 01:03:52.253500000
- date-end: 2025-09-25
- time-end: 03:32:33.231300000
- obs_id: A14_041T01_9000006510
- exposure: 8205.16933668
- 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_54057cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54057cztM0_level2_quad_clean.evt
|
| Size (bytes) | 571,461,120 | 126,239,040 |
| Size | 545.0 MB
| 120.4 MB
|
| Events in quadrant A | 5,771,666 | 779,877 |
| Events in quadrant B | 5,051,603 | 887,954 |
| Events in quadrant C | 4,144,676 | 801,702 |
| Events in quadrant D | 5,492,649 | 733,606 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 178 | 0 |
| B | 0 | 178 | 0 |
| C | 0 | 178 | 0 |
| D | 0 | 178 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 23818 | 0 |
| B | 0 | 21541 | 0 |
| C | 0 | 19102 | 0 |
| D | 0 | 22764 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8921 | 710 | 7.958749% |
| B | 8921 | 353 | 3.956955% |
| C | 8922 | 46 | 0.515579% |
| D | 8922 | 259 | 2.902937% |
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 | 8921 | 8921 | 466 | 466 | 5.22% | 5.22% |  |
| B | 8921 | 8921 | 193 | 193 | 2.16% | 2.16% |  |
| C | 8922 | 8922 | 34 | 34 | 0.38% | 0.38% |  |
| D | 8922 | 8922 | 262 | 262 | 2.94% | 2.94% |  |
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 | 12 | 15 | 1718707 | 7662.27 | 909 | 888 | 224.2 |
| A | 15 | 174 | 344921 | 1534.55 | 909 | 888 | 224.2 |
| A | 0 | 8 | 81315 | 358.74 | 909 | 888 | 224.2 |
| B | 2 | 249 | 461174 | 2301.9 | 936 | 901 | 200.0 |
| B | 7 | 252 | 265981 | 1325.71 | 936 | 901 | 200.0 |
| B | 0 | 213 | 135986 | 675.58 | 936 | 901 | 200.0 |
| C | 15 | 177 | 194051 | 755.36 | 934 | 925 | 255.7 |
| C | 12 | 252 | 61774 | 237.99 | 934 | 925 | 255.7 |
| C | 13 | 3 | 61460 | 236.77 | 934 | 925 | 255.7 |
| D | 3 | 12 | 923351 | 3600.89 | 908 | 867 | 256.2 |
| D | 8 | 176 | 421384 | 1641.48 | 908 | 867 | 256.2 |
| D | 14 | 52 | 264284 | 1028.24 | 908 | 867 | 256.2 |
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 |  |