Observation information
- date-obs: 2025-09-20
- time-obs: 17:18:17.179700000
- date-end: 2025-09-20
- time-end: 19:25:21.151600000
- obs_id: A14_041T01_9000006510
- exposure: 3462.49346161
- 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_53993cztM0_level2.fits
| modeM0/AS1A14_041T01_9000006510_53993cztM0_level2_quad_clean.evt
|
| Size (bytes) | 717,552,000 | 81,835,200 |
| Size | 684.3 MB
| 78.0 MB
|
| Events in quadrant A | 3,200,579 | 645,279 |
| Events in quadrant B | 8,431,940 | 479,430 |
| Events in quadrant C | 3,896,031 | 604,242 |
| Events in quadrant D | 10,541,936 | 307,128 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 13 | 0 |
| B | 0 | 14 | 0 |
| C | 0 | 14 | 0 |
| D | 0 | 14 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 128 | 0 |
| B | 0 | 128 | 0 |
| C | 0 | 128 | 0 |
| D | 0 | 128 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 14204 | 2 |
| B | 0 | 29532 | 6 |
| C | 0 | 16076 | 2 |
| D | 0 | 35774 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6332 | 113 | 1.784586% |
| B | 6331 | 2280 | 36.013268% |
| C | 6331 | 272 | 4.296320% |
| D | 6331 | 2982 | 47.101564% |
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 | 7542 | 6333 | 73 | 73 | 0.97% | 1.15% |  |
| B | 7541 | 6331 | 1546 | 1546 | 20.50% | 24.42% |  |
| C | 7541 | 6331 | 208 | 208 | 2.76% | 3.29% |  |
| D | 7540 | 6330 | 2868 | 2868 | 38.04% | 45.31% |  |
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 | 360651 | 2121.54 | 685 | 669 | 169.7 |
| A | 0 | 8 | 37104 | 214.73 | 685 | 669 | 169.7 |
| A | 8 | 6 | 33790 | 195.2 | 685 | 669 | 169.7 |
| B | 4 | 81 | 5342341 | 43398.5 | 584 | 565 | 123.1 |
| B | 0 | 213 | 334721 | 2714.8 | 584 | 565 | 123.1 |
| B | 0 | 155 | 207492 | 1681.15 | 584 | 565 | 123.1 |
| C | 1 | 241 | 436724 | 2354.2 | 673 | 666 | 185.2 |
| C | 14 | 80 | 225064 | 1211.49 | 673 | 666 | 185.2 |
| C | 12 | 2 | 142786 | 767.28 | 673 | 666 | 185.2 |
| D | 8 | 176 | 7412621 | 57748.96 | 448 | 429 | 128.4 |
| D | 6 | 239 | 682327 | 5312.72 | 448 | 429 | 128.4 |
| D | 2 | 165 | 244756 | 1903.57 | 448 | 429 | 128.4 |
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 |  |