ASTROSAT CZTI

Data Quality Report

Orbit 33107

Creation date: 2024-06-27T20:44:56.058852
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/AS1A11_008T06_9000004762_33107cztM0_level2.evt modeM0/AS1A11_008T06_9000004762_33107cztM0_level2_quad_clean.evt
Size (bytes)662,552,64061,459,200
Size631.9 MB 58.6 MB
Events in quadrant A2,496,299427,503
Events in quadrant B3,068,714414,969
Events in quadrant C4,207,184393,465
Events in quadrant D9,949,794267,498

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105543
B0122982
C0158712
D0330592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5085190.373648%
B50851953.834808%
C508552110.245821%
D5085267752.645034%

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 7118 5086 11 11 0.15% 0.22%
B 7118 5086 136 136 1.91% 2.67%
C 7118 5086 414 414 5.82% 8.14%
D 7118 5086 2524 2524 35.46% 49.63%

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 15 169 146673 1212.11 599 588 120.5
A 15 47 20320 163.72 599 588 120.5
A 13 6 11566 91.09 599 588 120.5
B 5 172 541979 4793.52 591 577 112.9
B 0 189 58075 509.08 591 577 112.9
B 15 85 40966 357.6 591 577 112.9
C 8 111 1440686 11009.36 565 570 130.8
C 0 10 230781 1759.91 565 570 130.8
C 7 221 148635 1131.92 565 570 130.8
D 7 223 3261743 26908.32 462 453 121.2
D 2 250 1516251 12506.58 462 453 121.2
D 8 195 1116588 9209.03 462 453 121.2

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