ASTROSAT CZTI

Data Quality Report

Orbit 14000

Creation date: 2024-06-27T16:48:52.776333
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_038T02_9000002068_14000cztM0_level2.evt modeM0/AS1A04_038T02_9000002068_14000cztM0_level2_quad_clean.evt
Size (bytes)527,932,800133,505,280
Size503.5 MB 127.3 MB
Events in quadrant A3,395,138903,881
Events in quadrant B3,677,703912,312
Events in quadrant C3,352,716880,159
Events in quadrant D5,065,673837,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151793
B0158842
C0150012
D0200952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7321480.655648%
B7321881.202022%
C7321560.764923%
D73213564.862724%

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 7722 7323 2 2 0.03% 0.03%
B 7722 7323 14 14 0.18% 0.19%
C 7722 7323 1 1 0.01% 0.01%
D 7722 7323 250 250 3.24% 3.41%

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 8 15 69164 401.92 842 824 170.0
A 12 189 49400 285.68 842 824 170.0
A 1 162 16290 90.96 842 824 170.0
B 0 219 94937 591.35 843 821 159.2
B 0 189 75730 470.67 843 821 159.2
B 3 64 68114 422.81 843 821 159.2
C 3 233 153359 823.29 809 812 185.3
C 12 4 28013 146.8 809 812 185.3
C 0 207 13537 68.68 809 812 185.3
D 1 52 1004305 5035.42 792 769 199.3
D 10 157 582372 2918.3 792 769 199.3
D 13 189 182519 911.96 792 769 199.3

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