Observation information
- date-obs: 2025-07-11
- time-obs: 09:45:29.113200000
- date-end: 2025-07-16
- time-end: 02:40:00.547500000
- obs_id: A13_003T01_9000006486
- exposure: 18497.0057802
- sourceid: M31N2008-12a
- observer: Judhajeet
- ra_pnt: 11.37
- dec_pnt: 41.90281
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A13_003T01_9000006486cztM0_level2.fits
| modeM0/AS1A13_003T01_9000006486cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,108,980,800 | 879,848,640 |
| Size | 2.0 GB
| 839.1 MB
|
| Events in quadrant A | 5,034,322 | 288,635 |
| Events in quadrant B | 14,249,659 | 2,317,564 |
| Events in quadrant C | 12,671,444 | 1,619,457 |
| Events in quadrant D | 10,963,374 | 1,656,161 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 371 | 0 |
| B | 0 | 378 | 0 |
| C | 0 | 372 | 0 |
| D | 0 | 377 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 2294204 | 0 |
| B | 0 | 739711 | 0 |
| C | 0 | 1252763 | 0 |
| D | 0 | 1339949 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 6153 | 0 |
| B | 0 | 6149 | 0 |
| C | 0 | 6155 | 0 |
| D | 0 | 6154 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 302413 | 268870 | 88.908215% |
| B | 302998 | 11581 | 3.822137% |
| C | 302964 | 73788 | 24.355369% |
| D | 302797 | 75766 | 25.022044% |
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 | 406472 | 279021 | 0 | 0 | 0.00% | 0.00% |  |
| B | 406473 | 303151 | 0 | 0 | 0.00% | 0.00% |  |
| C | 406473 | 301169 | 0 | 0 | 0.00% | 0.00% |  |
| D | 406473 | 299736 | 0 | 0 | 0.00% | 0.00% |  |
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 | 14 | 188 | 5774 | 10.29 | 1327 | 1231 | 441.5 |
| A | 14 | 204 | 4746 | 7.96 | 1327 | 1231 | 441.5 |
| A | 9 | 255 | 4267 | 6.88 | 1327 | 1231 | 441.5 |
| B | 2 | 9 | 16621 | 14.82 | 3782 | 3579 | 880.1 |
| B | 2 | 8 | 15016 | 12.99 | 3782 | 3579 | 880.1 |
| B | 9 | 173 | 11838 | 9.38 | 3782 | 3579 | 880.1 |
| C | 2 | 31 | 10309 | 6.23 | 3405 | 3095 | 1157.0 |
| C | 7 | 221 | 10004 | 5.97 | 3405 | 3095 | 1157.0 |
| C | 7 | 111 | 9755 | 5.76 | 3405 | 3095 | 1157.0 |
| D | 6 | 218 | 14277 | 10.87 | 3147 | 2790 | 1056.6 |
| D | 15 | 11 | 10878 | 7.65 | 3147 | 2790 | 1056.6 |
| D | 3 | 30 | 10007 | 6.83 | 3147 | 2790 | 1056.6 |
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 |  |