Observation information
- date-obs: 2025-09-21
- time-obs: 09:25:26.417700000
- date-end: 2025-09-21
- time-end: 12:52:02.010400000
- obs_id: A14_041T01_9000006510
- exposure: 6412.60436493
- 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_54003cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_54003cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,132,058,880 | 137,808,000 |
| Size | 1.1 GB
| 131.4 MB
|
| Events in quadrant A | 6,194,464 | 998,625 |
| Events in quadrant B | 9,681,998 | 937,274 |
| Events in quadrant C | 7,331,209 | 949,933 |
| Events in quadrant D | 17,856,135 | 533,066 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 15 | 0 |
| B | 0 | 15 | 0 |
| C | 0 | 15 | 0 |
| D | 0 | 15 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 222 | 0 |
| B | 0 | 222 | 0 |
| C | 0 | 222 | 0 |
| D | 0 | 222 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26323 | 2 |
| B | 0 | 36405 | 2 |
| C | 0 | 29553 | 2 |
| D | 0 | 60486 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 10876 | 440 | 4.045605% |
| B | 10877 | 1802 | 16.567068% |
| C | 10877 | 283 | 2.601820% |
| D | 10877 | 4810 | 44.221752% |
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 | 12395 | 10875 | 275 | 275 | 2.22% | 2.53% |  |
| B | 12397 | 10877 | 1361 | 1361 | 10.98% | 12.51% |  |
| C | 12397 | 10877 | 205 | 205 | 1.65% | 1.88% |  |
| D | 12396 | 10876 | 4500 | 4500 | 36.30% | 41.38% |  |
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 | 1043003 | 3693.86 | 1135 | 1106 | 282.1 |
| A | 7 | 14 | 266914 | 942.38 | 1135 | 1106 | 282.1 |
| A | 0 | 8 | 170717 | 601.33 | 1135 | 1106 | 282.1 |
| B | 5 | 250 | 2444679 | 10660.15 | 1072 | 1034 | 229.2 |
| B | 4 | 81 | 1731899 | 7550.72 | 1072 | 1034 | 229.2 |
| B | 0 | 213 | 622192 | 2709.74 | 1072 | 1034 | 229.2 |
| C | 12 | 250 | 970977 | 3192.14 | 1107 | 1099 | 303.8 |
| C | 10 | 171 | 815208 | 2679.46 | 1107 | 1099 | 303.8 |
| C | 13 | 3 | 400761 | 1315.4 | 1107 | 1099 | 303.8 |
| D | 8 | 176 | 12850583 | 53530.77 | 832 | 793 | 240.0 |
| D | 6 | 239 | 880351 | 3664.14 | 832 | 793 | 240.0 |
| D | 12 | 2 | 201311 | 835.34 | 832 | 793 | 240.0 |
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 |  |