ASTROSAT CZTI

Data Quality Report

Orbit 31448

Creation date: 2024-06-27T20:28:38.071422
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/AS1T04_029T01_9000004582_31448cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31448cztM0_level2_quad_clean.evt
Size (bytes)271,540,80034,911,360
Size259.0 MB 33.3 MB
Events in quadrant A1,524,569217,725
Events in quadrant B2,377,434217,753
Events in quadrant C1,679,066205,166
Events in quadrant D2,438,121202,990

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062681
B091681
C067562
D091421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2989461.538976%
B29891083.613249%
C29881966.559572%
D29882277.597055%

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 3714 2989 0 0 0.00% 0.00%
B 3714 2989 2 2 0.05% 0.07%
C 3713 2988 13 13 0.35% 0.44%
D 3713 2988 174 174 4.69% 5.82%

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 13 254 5307 60.65 395 386 81.1
A 3 137 4330 48.61 395 386 81.1
A 0 226 3340 36.41 395 386 81.1
B 6 159 783427 10155.42 387 376 77.1
B 4 80 26999 345.27 387 376 77.1
B 0 190 19717 250.83 387 376 77.1
C 0 10 88777 991.75 370 371 89.1
C 14 238 77564 865.96 370 371 89.1
C 14 254 26969 298.38 370 371 89.1
D 12 218 650326 7062.32 377 368 92.0
D 8 195 211434 2293.4 377 368 92.0
D 5 233 99471 1076.84 377 368 92.0

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