Observation information
- date-obs: 2026-07-01
- time-obs: 17:23:47.248800000
- date-end: 2026-07-02
- time-end: 03:54:16.146300000
- obs_id: A14_042T02_9000006586
- exposure: 32556.9542569
- sourceid: NGC4038
- observer: pshalima
- ra_pnt: 180.4708
- dec_pnt: -18.86759
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_042T02_9000006586_58219cztM0_level2.fits
| modeM0/AS1A14_042T02_9000006586_58219cztM0_level2_quad_clean.evt
|
| Size (bytes) | 2,154,942,720 | 491,071,680 |
| Size | 2.0 GB
| 468.3 MB
|
| Events in quadrant A | 16,258,584 | 3,231,513 |
| Events in quadrant B | 19,581,714 | 3,435,428 |
| Events in quadrant C | 15,932,904 | 3,066,334 |
| Events in quadrant D | 25,341,305 | 2,777,672 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 37 | 0 |
| B | 0 | 37 | 0 |
| C | 0 | 37 | 0 |
| D | 0 | 37 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 694 | 0 |
| B | 0 | 694 | 0 |
| C | 0 | 694 | 0 |
| D | 0 | 694 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 74351 | 5 |
| B | 0 | 81086 | 5 |
| C | 0 | 73446 | 5 |
| D | 0 | 99584 | 5 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 34319 | 466 | 1.357848% |
| B | 34319 | 760 | 2.214517% |
| C | 34319 | 295 | 0.859582% |
| D | 34319 | 1999 | 5.824762% |
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 | 37829 | 34323 | 296 | 296 | 0.78% | 0.86% |  |
| B | 37829 | 34320 | 367 | 367 | 0.97% | 1.07% |  |
| C | 37829 | 34322 | 222 | 222 | 0.59% | 0.65% |  |
| D | 37829 | 34322 | 2117 | 2117 | 5.60% | 6.17% |  |
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 | 10 | 251 | 848147 | 928.8 | 3691 | 3601 | 909.3 |
| A | 13 | 248 | 528594 | 577.37 | 3691 | 3601 | 909.3 |
| A | 8 | 246 | 390115 | 425.07 | 3691 | 3601 | 909.3 |
| B | 10 | 128 | 2352137 | 3049.89 | 3629 | 3484 | 770.1 |
| B | 2 | 249 | 663834 | 857.51 | 3629 | 3484 | 770.1 |
| B | 4 | 236 | 438811 | 565.3 | 3629 | 3484 | 770.1 |
| C | 12 | 252 | 844508 | 860.43 | 3570 | 3537 | 977.4 |
| C | 6 | 223 | 655098 | 666.64 | 3570 | 3537 | 977.4 |
| C | 14 | 254 | 172546 | 172.92 | 3570 | 3537 | 977.4 |
| D | 12 | 110 | 4709338 | 4756.53 | 3499 | 3349 | 989.4 |
| D | 2 | 31 | 1143223 | 1152.12 | 3499 | 3349 | 989.4 |
| D | 8 | 240 | 857910 | 863.74 | 3499 | 3349 | 989.4 |
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 |  |