Observation information
- date-obs: 2025-09-16
- time-obs: 07:31:29.514300000
- date-end: 2025-09-16
- time-end: 11:45:51.021000000
- obs_id: A14_057T04_9000006508
- exposure: 10026.8663058
- 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_53929cztM0_level2.fits
| modeM0/AS1A14_057T04_9000006508_53929cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,343,344,320 | 195,586,560 |
| Size | 1.3 GB
| 186.5 MB
|
| Events in quadrant A | 8,175,323 | 1,370,003 |
| Events in quadrant B | 8,221,617 | 1,446,149 |
| Events in quadrant C | 9,665,450 | 1,260,674 |
| Events in quadrant D | 22,510,246 | 814,430 |
Level1 data integrity
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 34596 | 3 |
| B | 0 | 34979 | 2 |
| C | 0 | 39315 | 2 |
| D | 0 | 77079 | 2 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 302 | 0 |
| B | 0 | 302 | 0 |
| C | 0 | 302 | 0 |
| D | 0 | 302 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 3 | 0 |
| B | 0 | 3 | 0 |
| C | 0 | 3 | 0 |
| D | 0 | 3 | 0 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 14916 | 530 | 3.553231% |
| B | 14916 | 556 | 3.727541% |
| C | 14916 | 797 | 5.343256% |
| D | 14917 | 5327 | 35.710934% |
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 | 15260 | 14915 | 247 | 247 | 1.62% | 1.66% |  |
| B | 15261 | 14916 | 191 | 191 | 1.25% | 1.28% |  |
| C | 15260 | 14916 | 624 | 624 | 4.09% | 4.18% |  |
| D | 15262 | 14917 | 5296 | 5296 | 34.70% | 35.50% |  |
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 | 551893 | 1383.84 | 1621 | 1583 | 397.7 |
| A | 0 | 8 | 394652 | 988.43 | 1621 | 1583 | 397.7 |
| A | 3 | 45 | 234278 | 585.15 | 1621 | 1583 | 397.7 |
| B | 0 | 213 | 771875 | 2265.78 | 1598 | 1541 | 340.0 |
| B | 5 | 236 | 347581 | 1017.81 | 1598 | 1541 | 340.0 |
| B | 4 | 67 | 170963 | 498.32 | 1598 | 1541 | 340.0 |
| C | 1 | 241 | 1409928 | 3348.15 | 1544 | 1532 | 420.6 |
| C | 15 | 157 | 580470 | 1376.3 | 1544 | 1532 | 420.6 |
| C | 12 | 2 | 305253 | 722.03 | 1544 | 1532 | 420.6 |
| D | 8 | 176 | 10526353 | 28043.17 | 1308 | 1252 | 375.3 |
| D | 6 | 239 | 1865117 | 4966.1 | 1308 | 1252 | 375.3 |
| D | 2 | 172 | 1599838 | 4259.29 | 1308 | 1252 | 375.3 |
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 |  |