Observation information
- date-obs: 2026-02-25
- time-obs: 21:55:49.445200000
- date-end: 2026-02-26
- time-end: 00:21:27.424200000
- obs_id: A14_049T01_9000006552
- exposure: 5652.32987297
- sourceid: NGC 1487
- observer: amrutha
- ra_pnt: 58.94208
- dec_pnt: -42.36806
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1A14_049T01_9000006552_56344cztM0_level2.fits
| modeM0/AS1A14_049T01_9000006552_56344cztM0_level2_quad_clean.evt
|
| Size (bytes) | 677,151,360 | 92,148,480 |
| Size | 645.8 MB
| 87.9 MB
|
| Events in quadrant A | 4,803,968 | 614,081 |
| Events in quadrant B | 4,248,700 | 680,497 |
| Events in quadrant C | 6,912,099 | 540,073 |
| Events in quadrant D | 8,565,017 | 473,225 |
Level1 data integrity
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 142 | 0 |
| B | 0 | 142 | 0 |
| C | 0 | 142 | 0 |
| D | 0 | 142 | 0 |
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19 | 0 |
| B | 0 | 19 | 0 |
| C | 0 | 19 | 0 |
| D | 0 | 19 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 19346 | 2 |
| B | 0 | 17369 | 2 |
| C | 0 | 25338 | 2 |
| D | 0 | 30213 | 2 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 6919 | 508 | 7.342101% |
| B | 6919 | 302 | 4.364793% |
| C | 6919 | 1103 | 15.941610% |
| D | 6919 | 1445 | 20.884521% |
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 | 8739 | 6921 | 480 | 480 | 5.49% | 6.94% |  |
| B | 8739 | 6921 | 150 | 150 | 1.72% | 2.17% |  |
| C | 8739 | 6920 | 911 | 911 | 10.42% | 13.16% |  |
| D | 8739 | 6919 | 1346 | 1346 | 15.40% | 19.45% |  |
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 | 4 | 95 | 1147660 | 6477.5 | 712 | 698 | 177.1 |
| A | 3 | 78 | 398023 | 2243.9 | 712 | 698 | 177.1 |
| A | 1 | 191 | 131106 | 736.48 | 712 | 698 | 177.1 |
| B | 5 | 172 | 383637 | 2492.97 | 719 | 694 | 153.6 |
| B | 0 | 171 | 338048 | 2196.19 | 719 | 694 | 153.6 |
| B | 5 | 185 | 263567 | 1711.31 | 719 | 694 | 153.6 |
| C | 12 | 254 | 1515798 | 8381.97 | 657 | 651 | 180.8 |
| C | 15 | 230 | 1297409 | 7173.81 | 657 | 651 | 180.8 |
| C | 13 | 3 | 934428 | 5165.76 | 657 | 651 | 180.8 |
| D | 8 | 129 | 3973132 | 21546.78 | 638 | 609 | 184.4 |
| D | 8 | 240 | 659822 | 3575.54 | 638 | 609 | 184.4 |
| D | 6 | 239 | 538517 | 2917.59 | 638 | 609 | 184.4 |
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 |  |