ASTROSAT CZTI

Data Quality Report

Orbit 36420

Creation date: 2022-06-23T20:45:32.956794
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_36420cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36420cztM0_level2_quad_clean.evt
Size (bytes)449,464,32047,229,120
Size428.6 MB 45.0 MB
Events in quadrant A2,851,928278,267
Events in quadrant B4,349,407270,776
Events in quadrant C2,987,751266,442
Events in quadrant D3,078,622258,273

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114933
B0163032
C0116392
D0123272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5075100.197044%
B50754418.689655%
C5075831.635468%
D5075801.576355%

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 7169 5076 1 1 0.01% 0.02%
B 7169 5076 277 277 3.86% 5.46%
C 7169 5076 66 66 0.92% 1.30%
D 7169 5076 60 60 0.84% 1.18%

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 185065 1389.16 664 654 132.8
A 15 223 96288 720.41 664 654 132.8
A 13 254 9003 62.89 664 654 132.8
B 5 172 1211197 10066.66 636 621 120.3
B 0 190 160369 1328.4 636 621 120.3
B 0 189 145685 1206.29 636 621 120.3
C 0 10 287043 1969.35 629 633 145.4
C 15 214 218485 1497.94 629 633 145.4
C 12 249 18546 123.17 629 633 145.4
D 2 250 139959 906.93 638 622 153.6
D 12 6 124988 809.48 638 622 153.6
D 10 199 97488 630.49 638 622 153.6

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