Observation information
- date-obs: 2025-09-16
- time-obs: 03:41:52.821100000
- date-end: 2025-09-16
- time-end: 06:09:47.063300000
- obs_id: A14_057T04_9000006508
- exposure: 6583.84055001
- sourceid: Abell_2142
- observer: divya_astro
- ra_pnt: 239.5833
- dec_pnt: 27.23341
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_057T04_9000006508_53925cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53925cztM0_level2_quad_clean.evt
|
| Size (bytes) | 730,134,720 | 118,117,440 |
| Size | 696.3 MB
| 112.6 MB
|
| Events in quadrant A | 4,586,095 | 812,912 |
| Events in quadrant B | 4,642,606 | 841,263 |
| Events in quadrant C | 5,941,045 | 747,249 |
| Events in quadrant D | 11,177,636 | 566,784 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19692 | 1 |
| B | 0 | 20004 | 1 |
| C | 0 | 23999 | 1 |
| D | 0 | 39321 | 1 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 176 | 0 |
| B | 0 | 176 | 0 |
| C | 0 | 176 | 0 |
| D | 0 | 176 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1 | 0 |
| B | 0 | 1 | 0 |
| C | 0 | 1 | 0 |
| D | 0 | 1 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 8760 | 318 | 3.630137% |
| B | 8761 | 550 | 6.277822% |
| C | 8761 | 724 | 8.263897% |
| D | 8760 | 2399 | 27.385845% |
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 | 8875 | 8760 | 85 | 85 | 0.96% | 0.97% |  |
| B | 8876 | 8761 | 155 | 155 | 1.75% | 1.77% |  |
| C | 8876 | 8761 | 583 | 583 | 6.57% | 6.65% |  |
| D | 8875 | 8760 | 2251 | 2251 | 25.36% | 25.70% |  |
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 | 0 | 8 | 273077 | 1138.15 | 992 | 966 | 239.1 |
| A | 15 | 174 | 196263 | 816.86 | 992 | 966 | 239.1 |
| A | 7 | 14 | 39031 | 159.21 | 992 | 966 | 239.1 |
| B | 5 | 236 | 437715 | 2133.05 | 967 | 933 | 204.8 |
| B | 0 | 213 | 88733 | 428.78 | 967 | 933 | 204.8 |
| B | 0 | 153 | 57045 | 274.03 | 967 | 933 | 204.8 |
| C | 9 | 53 | 1047374 | 4013.47 | 950 | 942 | 260.7 |
| C | 1 | 241 | 692375 | 2651.91 | 950 | 942 | 260.7 |
| C | 13 | 3 | 221633 | 846.44 | 950 | 942 | 260.7 |
| D | 8 | 176 | 6034490 | 25764.68 | 840 | 804 | 234.2 |
| D | 3 | 12 | 1080559 | 4610.7 | 840 | 804 | 234.2 |
| D | 6 | 239 | 320642 | 1365.75 | 840 | 804 | 234.2 |
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 |  |