ASTROSAT CZTI

Data Quality Report

Orbit 31733

Creation date: 2024-06-27T20:32:04.317161
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_034T01_9000004632_31733cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31733cztM0_level2_quad_clean.evt
Size (bytes)756,627,840104,696,640
Size721.6 MB 99.8 MB
Events in quadrant A6,080,234660,621
Events in quadrant B6,392,907683,762
Events in quadrant C4,505,821658,892
Events in quadrant D5,434,767651,082

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230379
B0244482
C0180952
D0212022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7419104314.058498%
B74194185.634183%
C74194095.512872%
D74192743.693220%

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 8704 7421 488 488 5.61% 6.58%
B 8704 7421 23 23 0.26% 0.31%
C 8704 7421 98 98 1.13% 1.32%
D 8704 7421 153 153 1.76% 2.06%

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 0 13 2704402 15339.61 873 854 176.2
A 13 254 14199 75.72 873 854 176.2
A 3 137 8917 45.75 873 854 176.2
B 6 159 2042132 11417.22 922 897 178.8
B 4 80 568021 3172.09 922 897 178.8
B 5 172 38529 210.49 922 897 178.8
C 0 10 663312 3158.51 886 894 209.7
C 14 238 143196 678.52 886 894 209.7
C 10 22 138805 657.58 886 894 209.7
D 8 195 1186119 5508.62 904 882 215.2
D 12 233 792916 3681.13 904 882 215.2
D 2 234 31656 143.03 904 882 215.2

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