Observation information
- date-obs: 2025-05-16
- time-obs: 23:28:51.739700000
- date-end: 2025-05-17
- time-end: 01:50:46.719700000
- obs_id: C09_011T07_9000006470
- exposure: 251.825521171
- 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_9000006470_52110cztM0_level2.fits
| modeM0/AS1C09_011T07_9000006470_52110cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,089,527,040 | 79,041,600 |
| Size | 1.0 GB
| 75.4 MB
|
| Events in quadrant A | 4,971,787 | 679,927 |
| Events in quadrant B | 6,875,494 | 655,130 |
| Events in quadrant C | 9,793,449 | 519,511 |
| Events in quadrant D | 18,118,717 | 23,713 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 161 | 11 |
| B | 0 | 157 | 9 |
| C | 0 | 160 | 10 |
| D | 0 | 160 | 12 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 1 | 1 |
| B | 0 | 2 | 2 |
| C | 0 | 1 | 1 |
| D | 0 | 1 | 1 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 21275 | 1315 |
| B | 0 | 27174 | 1724 |
| C | 0 | 37063 | 2823 |
| D | 0 | 63903 | 5131 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 7426 | 199 | 2.679774% |
| B | 7408 | 1095 | 14.781317% |
| C | 7367 | 2104 | 28.559794% |
| D | 7352 | 7168 | 97.497280% |
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 | 8513 | 7476 | 175 | 175 | 2.06% | 2.34% |  |
| B | 8513 | 7457 | 660 | 660 | 7.75% | 8.85% |  |
| C | 8508 | 7385 | 1572 | 1572 | 18.48% | 21.29% |  |
| D | 8140 | 7371 | 6181 | 6181 | 75.93% | 83.86% |  |
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 | 8 | 43 | 898690 | 4549.05 | 790 | 768 | 197.4 |
| A | 4 | 249 | 224965 | 1135.83 | 790 | 768 | 197.4 |
| A | 4 | 3 | 215969 | 1090.25 | 790 | 768 | 197.4 |
| B | 8 | 3 | 1534727 | 9624.3 | 752 | 727 | 159.4 |
| B | 12 | 32 | 1156956 | 7254.17 | 752 | 727 | 159.4 |
| B | 10 | 44 | 158130 | 987.54 | 752 | 727 | 159.4 |
| C | 15 | 224 | 5080806 | 26907.27 | 686 | 681 | 188.8 |
| C | 2 | 239 | 792546 | 4194.17 | 686 | 681 | 188.8 |
| C | 13 | 3 | 410732 | 2171.87 | 686 | 681 | 188.8 |
| D | 6 | 42 | 14664140 | 202129.82 | 245 | 233 | 72.5 |
| D | 15 | 94 | 975458 | 13442.67 | 245 | 233 | 72.5 |
| D | 12 | 17 | 548307 | 7554.75 | 245 | 233 | 72.5 |
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 |  |