ASTROSAT CZTI

Data Quality Report

Orbit 08975

Creation date: 2024-06-27T15:39:48.832535
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A03_107T01_9000001246_08975cztM0_level2.evt modeM0/AS1A03_107T01_9000001246_08975cztM0_level2_quad_clean.evt
Size (bytes)347,065,92040,487,040
Size331.0 MB 38.6 MB
Events in quadrant A2,186,494248,574
Events in quadrant B3,474,586248,024
Events in quadrant C2,661,251245,967
Events in quadrant D1,955,385240,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087022
B0126211
C0101581
D080731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34302035.918367%
B343058617.084548%
C34303088.979592%
D34301604.664723%

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 4575 3430 45 45 0.98% 1.31%
B 4575 3430 280 280 6.12% 8.16%
C 4575 3431 172 172 3.76% 5.01%
D 4575 3430 58 58 1.27% 1.69%

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 5 16 238644 2569.16 443 432 92.7
A 8 5 169356 1821.88 443 432 92.7
A 13 251 68478 733.89 443 432 92.7
B 0 85 1730211 20126.04 435 425 85.9
B 0 214 38595 444.11 435 425 85.9
B 12 111 8482 93.74 435 425 85.9
C 4 254 999501 10071.57 423 426 99.2
C 8 128 3469 30.68 423 426 99.2
C 13 61 3197 27.93 423 426 99.2
D 12 233 158272 1456.13 434 420 108.4
D 1 52 60282 552.2 434 420 108.4
D 7 71 29155 265.07 434 420 108.4

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