Observation information
- date-obs: 2025-07-21
- time-obs: 03:14:41.571400000
- date-end: 2025-07-21
- time-end: 05:13:51.555900000
- obs_id: C09_011T07_9000006488
- exposure: 295.033713758
- sourceid: NGC 188
- observer: stalin
- ra_pnt: 12.08
- dec_pnt: 85.15722
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1C09_011T07_9000006488_53078cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006488_53078cztM0_level2_quad_clean.evt
|
| Size (bytes) | 857,727,360 | 64,353,600 |
| Size | 818.0 MB
| 61.4 MB
|
| Events in quadrant A | 14,746,307 | 27,587 |
| Events in quadrant B | 3,419,147 | 602,356 |
| Events in quadrant C | 7,828,431 | 420,712 |
| Events in quadrant D | 5,297,800 | 483,812 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 122 | 0 |
| B | 0 | 122 | 0 |
| C | 0 | 122 | 0 |
| D | 0 | 122 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 47774 | 1 |
| B | 0 | 14555 | 2 |
| C | 0 | 27263 | 1 |
| D | 0 | 19967 | 1 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 5921 | 5709 | 96.419524% |
| B | 5920 | 214 | 3.614865% |
| C | 5920 | 1619 | 27.347973% |
| D | 5920 | 567 | 9.577703% |
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 | 7150 | 5920 | 5112 | 5112 | 71.50% | 86.35% |  |
| B | 7150 | 5921 | 155 | 155 | 2.17% | 2.62% |  |
| C | 7150 | 5921 | 1469 | 1469 | 20.55% | 24.81% |  |
| D | 7150 | 5921 | 547 | 547 | 7.65% | 9.24% |  |
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 | 13337195 | 208706.2 | 250 | 244 | 63.9 |
| A | 13 | 248 | 138194 | 2158.74 | 250 | 244 | 63.9 |
| A | 0 | 8 | 103292 | 1612.57 | 250 | 244 | 63.9 |
| B | 1 | 255 | 805335 | 6342.24 | 597 | 579 | 126.9 |
| B | 10 | 247 | 42167 | 327.75 | 597 | 579 | 126.9 |
| B | 4 | 81 | 30705 | 237.42 | 597 | 579 | 126.9 |
| C | 15 | 224 | 2638394 | 18388.22 | 515 | 509 | 143.5 |
| C | 1 | 241 | 2516539 | 17538.79 | 515 | 509 | 143.5 |
| C | 7 | 80 | 124809 | 866.47 | 515 | 509 | 143.5 |
| D | 8 | 176 | 1304770 | 8037.29 | 562 | 536 | 162.3 |
| D | 12 | 17 | 603786 | 3717.51 | 562 | 536 | 162.3 |
| D | 1 | 241 | 397793 | 2448.08 | 562 | 536 | 162.3 |
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 |  |