ASTROSAT CZTI

Data Quality Report

Orbit 34633

Creation date: 2022-02-23T11:55:47.143453
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/AS1T05_008T01_9000004956_34633cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34633cztM0_level2_quad_clean.evt
Size (bytes)757,488,960135,230,400
Size722.4 MB 129.0 MB
Events in quadrant A4,023,098890,678
Events in quadrant B5,973,132871,857
Events in quadrant C4,300,995897,890
Events in quadrant D8,052,526828,101

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181103
B0236802
C0181722
D0300962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8740120.137300%
B87404955.663616%
C8740420.480549%
D87404094.679634%

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 10053 8741 1 1 0.01% 0.01%
B 10053 8741 328 328 3.26% 3.75%
C 10053 8741 23 23 0.23% 0.26%
D 10053 8741 339 339 3.37% 3.88%

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 138568 701.26 979 958 196.2
A 10 83 54106 270.84 979 958 196.2
A 9 143 26358 129.44 979 958 196.2
B 5 172 1845965 10074.05 957 931 183.1
B 4 232 144002 781.18 957 931 183.1
B 0 189 130451 707.19 957 931 183.1
C 15 214 360699 1621.13 953 960 221.9
C 0 10 112358 502.01 953 960 221.9
C 14 67 74260 330.32 953 960 221.9
D 8 195 2625191 10521.55 929 909 249.4
D 3 13 489728 1959.83 929 909 249.4
D 7 223 207085 826.62 929 909 249.4

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