ASTROSAT CZTI

Data Quality Report

Orbit 12180

Creation date: 2024-06-27T16:23:28.367901
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/AS1A04_160T01_9000001798_12180cztM0_level2.evt modeM0/AS1A04_160T01_9000001798_12180cztM0_level2_quad_clean.evt
Size (bytes)740,531,520157,639,680
Size706.2 MB 150.3 MB
Events in quadrant A4,229,4111,075,773
Events in quadrant B8,313,190989,400
Events in quadrant C4,092,7631,063,399
Events in quadrant D5,175,3691,014,421

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191233
B0309122
C0188032
D0216032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90951751.924134%
B9095153016.822430%
C9095530.582738%
D90951651.814184%

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 9811 9098 1 1 0.01% 0.01%
B 9811 9098 958 958 9.76% 10.53%
C 9811 9098 8 8 0.08% 0.09%
D 9811 9098 86 86 0.88% 0.95%

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 1 162 56189 264.05 1022 999 209.0
A 5 16 41596 194.23 1022 999 209.0
A 8 15 31563 146.23 1022 999 209.0
B 4 239 3257912 18184.13 955 931 179.1
B 10 16 613867 3422.1 955 931 179.1
B 15 204 204953 1139.08 955 931 179.1
C 15 208 141956 609.88 999 1000 231.1
C 0 207 39855 168.12 999 1000 231.1
C 12 4 8618 32.96 999 1000 231.1
D 8 195 471558 2000.41 983 953 235.3
D 4 95 245660 1040.18 983 953 235.3
D 1 52 184648 780.84 983 953 235.3

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