ASTROSAT CZTI

Data Quality Report

Orbit 20328

Creation date: 2024-06-27T18:13:57.328144
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/AS1A05_174T01_9000003008_20328cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20328cztM0_level2_quad_clean.evt
Size (bytes)562,907,52083,030,400
Size536.8 MB 79.2 MB
Events in quadrant A4,600,539501,222
Events in quadrant B4,490,538509,505
Events in quadrant C3,607,783492,625
Events in quadrant D3,840,482489,620

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185422
B0181102
C0155582
D0164212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74915727.635830%
B74924235.646022%
C74922032.709557%
D74921481.975440%

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 8091 7493 282 282 3.49% 3.76%
B 8092 7494 144 144 1.78% 1.92%
C 8092 7494 1 1 0.01% 0.01%
D 8092 7494 27 27 0.33% 0.36%

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 14 238 946130 5180.3 898 877 182.5
A 5 16 169979 926.74 898 877 182.5
A 5 168 11857 60.17 898 877 182.5
B 4 142 469290 2665.27 903 879 175.7
B 7 220 275641 1563.4 903 879 175.7
B 0 197 63833 358.21 903 879 175.7
C 14 238 135457 642.14 882 887 209.6
C 0 207 17163 77.67 882 887 209.6
C 3 9 10854 47.56 882 887 209.6
D 1 52 277303 1233.1 906 877 224.2
D 9 1 89393 394.86 906 877 224.2
D 2 234 36026 156.79 906 877 224.2

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