ASTROSAT CZTI

Data Quality Report

Orbit 18981

Creation date: 2024-06-27T17:57:29.597005
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_166T04_9000002826_18981cztM0_level2.evt modeM0/AS1A05_166T04_9000002826_18981cztM0_level2_quad_clean.evt
Size (bytes)742,089,60081,089,280
Size707.7 MB 77.3 MB
Events in quadrant A3,763,925487,273
Events in quadrant B4,957,943488,872
Events in quadrant C3,997,683477,928
Events in quadrant D9,225,414456,207

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162692
B0196932
C0168032
D0329676

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78311151.468523%
B78323754.788049%
C78322122.706844%
D783191711.709871%

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 8046 7832 0 0 0.00% 0.00%
B 8047 7833 180 180 2.24% 2.30%
C 8047 7833 45 45 0.56% 0.57%
D 8047 7833 681 681 8.46% 8.69%

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 5 98 13870 65.37 972 950 197.6
A 0 226 8619 38.8 972 950 197.6
A 13 254 7830 34.81 972 950 197.6
B 3 112 973677 5199.56 956 930 187.1
B 7 220 174878 929.79 956 930 187.1
B 12 111 22068 112.99 956 930 187.1
C 0 207 193352 877.02 929 936 219.4
C 14 238 142818 646.69 929 936 219.4
C 3 233 26651 117.21 929 936 219.4
D 7 238 4602364 20401.29 922 897 225.5
D 1 52 533648 2362.03 922 897 225.5
D 12 218 316571 1399.59 922 897 225.5

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