Observation information
- date-obs: 2025-07-13
- time-obs: 07:50:19.178100000
- date-end: 2025-07-13
- time-end: 09:47:23.159500000
- obs_id: A13_003T01_9000006486
- exposure: 3971.09205383
- 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_9000006486_52962cztM0_level2.fits
| modeM0/AS1A13_003T01_9000006486_52962cztM0_level2_quad_clean.evt
|
| Size (bytes) | 670,824,000 | 78,356,160 |
| Size | 639.7 MB
| 74.7 MB
|
| Events in quadrant A | 5,957,062 | 507,937 |
| Events in quadrant B | 3,703,696 | 599,366 |
| Events in quadrant C | 5,000,164 | 508,104 |
| Events in quadrant D | 9,714,635 | 345,167 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 11 | 0 |
| B | 0 | 11 | 0 |
| C | 0 | 11 | 0 |
| D | 0 | 11 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21731 | 2 |
| B | 0 | 15072 | 2 |
| C | 0 | 19084 | 2 |
| D | 0 | 32961 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 120 | 0 |
| B | 0 | 120 | 0 |
| C | 0 | 120 | 0 |
| D | 0 | 120 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5889 | 904 | 15.350654% |
| B | 5890 | 395 | 6.706282% |
| C | 5890 | 575 | 9.762309% |
| D | 5890 | 2167 | 36.791171% |
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 | 7024 | 5889 | 681 | 681 | 9.70% | 11.56% |  |
| B | 7025 | 5890 | 266 | 266 | 3.79% | 4.52% |  |
| C | 7025 | 5891 | 493 | 493 | 7.02% | 8.37% |  |
| D | 7025 | 5890 | 2011 | 2011 | 28.63% | 34.14% |  |
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 | 9 | 191 | 3118202 | 20517.7 | 612 | 597 | 151.9 |
| A | 0 | 8 | 210368 | 1380.55 | 612 | 597 | 151.9 |
| A | 13 | 248 | 97895 | 640.34 | 612 | 597 | 151.9 |
| B | 10 | 63 | 855584 | 6453.84 | 620 | 599 | 132.5 |
| B | 5 | 185 | 127152 | 955.28 | 620 | 599 | 132.5 |
| B | 10 | 254 | 49453 | 368.77 | 620 | 599 | 132.5 |
| C | 4 | 5 | 849263 | 5238.34 | 594 | 590 | 162.0 |
| C | 7 | 80 | 630842 | 3890.16 | 594 | 590 | 162.0 |
| C | 13 | 3 | 367026 | 2261.78 | 594 | 590 | 162.0 |
| D | 8 | 176 | 3923392 | 27236.51 | 503 | 481 | 144.0 |
| D | 15 | 78 | 2530605 | 17566.48 | 503 | 481 | 144.0 |
| D | 2 | 62 | 493783 | 3424.96 | 503 | 481 | 144.0 |
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 |  |