ASTROSAT CZTI

Data Quality Report

Orbit 36411

Creation date: 2022-06-23T14:14:43.356784
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_084T01_9000005198_36411cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36411cztM0_level2_quad_clean.evt
Size (bytes)513,889,92082,321,920
Size490.1 MB 78.5 MB
Events in quadrant A3,080,366527,019
Events in quadrant B4,819,139511,463
Events in quadrant C3,299,839519,807
Events in quadrant D3,936,897495,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131863
B0185852
C0135262
D0159552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A630090.142857%
B63005408.571429%
C6300641.015873%
D63002133.380952%

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 8984 6302 1 1 0.01% 0.02%
B 8984 6302 347 347 3.86% 5.51%
C 8984 6302 43 43 0.48% 0.68%
D 8984 6302 167 167 1.86% 2.65%

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 200396 1347.01 727 712 148.2
A 15 223 39908 264.4 727 712 148.2
A 8 144 22182 144.83 727 712 148.2
B 5 172 1337166 9959.53 697 677 134.2
B 5 255 349953 2602.81 697 677 134.2
B 0 189 204972 1522.41 697 677 134.2
C 15 214 269896 1626.92 706 711 165.5
C 0 10 261668 1577.19 706 711 165.5
C 15 159 11524 65.35 706 711 165.5
D 12 6 446817 2595.12 703 684 171.9
D 2 249 253305 1469.47 703 684 171.9
D 2 250 167444 970.03 703 684 171.9

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