ASTROSAT CZTI

Data Quality Report

Orbit 34908

Creation date: 2022-03-13T20:50:15.610514
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_065T05_9000004998_34908cztM0_level2.evt modeM0/AS1A11_065T05_9000004998_34908cztM0_level2_quad_clean.evt
Size (bytes)719,441,280122,155,200
Size686.1 MB 116.5 MB
Events in quadrant A4,208,528785,340
Events in quadrant B4,710,277798,717
Events in quadrant C4,608,596777,032
Events in quadrant D7,648,431709,969

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183362
B0197662
C0187752
D0291652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A906090.099338%
B9060780.860927%
C9060520.573951%
D90604054.470199%

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 11718 9062 0 0 0.00% 0.00%
B 11718 9062 45 45 0.38% 0.50%
C 11718 9062 42 42 0.36% 0.46%
D 11718 9062 379 379 3.23% 4.18%

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 10 83 71163 329.81 1056 1035 212.6
A 15 223 37662 172.25 1056 1035 212.6
A 13 254 15133 66.3 1056 1035 212.6
B 5 172 214947 1056.8 1047 1017 202.4
B 4 232 145003 711.28 1047 1017 202.4
B 0 190 60736 295.01 1047 1017 202.4
C 15 214 400155 1658.75 1027 1032 240.6
C 0 10 160084 661.02 1027 1032 240.6
C 14 67 21788 86.26 1027 1032 240.6
D 8 195 1762162 7050.18 1012 983 249.8
D 1 52 932318 3728.23 1012 983 249.8
D 13 249 344381 1374.66 1012 983 249.8

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