ASTROSAT CZTI

Data Quality Report

Orbit 13015

Creation date: 2024-06-27T16:35:06.680412
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/AS1T02_002T01_9000001914_13015cztM0_level2.evt modeM0/AS1T02_002T01_9000001914_13015cztM0_level2_quad_clean.evt
Size (bytes)581,322,240128,949,120
Size554.4 MB 123.0 MB
Events in quadrant A3,430,729891,431
Events in quadrant B6,074,369783,485
Events in quadrant C3,127,907890,891
Events in quadrant D4,495,929850,129

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148603
B0226302
C0143672
D0181812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70191171.666904%
B7019132718.905827%
C7019430.612623%
D70203404.843305%

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 7720 7021 20 20 0.26% 0.28%
B 7720 7021 949 949 12.29% 13.52%
C 7720 7021 6 6 0.08% 0.09%
D 7721 7022 219 219 2.84% 3.12%

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 12 189 102609 620.65 817 799 164.0
A 15 223 61091 367.55 817 799 164.0
A 15 174 36487 217.56 817 799 164.0
B 4 239 2996564 21882.47 726 706 136.9
B 3 64 81450 589.77 726 706 136.9
B 0 214 29648 211.4 726 706 136.9
C 0 207 30690 165.91 788 789 180.2
C 14 234 16679 88.17 788 789 180.2
C 13 61 5727 27.4 788 789 180.2
D 1 52 1453017 7723.77 781 758 188.0
D 8 195 44762 234.03 781 758 188.0
D 2 234 23019 118.39 781 758 188.0

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