ASTROSAT CZTI

Data Quality Report

Orbit 12757

Creation date: 2024-06-27T16:32:00.753051
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_044T01_9000001882_12757cztM0_level2.evt modeM0/AS1A04_044T01_9000001882_12757cztM0_level2_quad_clean.evt
Size (bytes)743,106,240108,192,960
Size708.7 MB 103.2 MB
Events in quadrant A5,284,342683,083
Events in quadrant B6,075,957642,127
Events in quadrant C5,427,280696,576
Events in quadrant D5,146,379668,111

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216143
B0235932
C0218492
D0211672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84411461.729653%
B8441100111.858785%
C84417138.446866%
D84411762.085061%

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 9112 8444 33 33 0.36% 0.39%
B 9112 8444 644 644 7.07% 7.63%
C 9112 8444 458 458 5.03% 5.42%
D 9112 8444 127 127 1.39% 1.50%

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 23 577946 2789.58 998 973 206.8
A 15 222 551441 2661.43 998 973 206.8
A 9 143 179474 863.03 998 973 206.8
B 4 239 1833205 9975.94 948 923 183.7
B 0 85 396861 2155.7 948 923 183.7
B 0 214 33853 179.29 948 923 183.7
C 15 208 1797985 8303.28 930 936 216.4
C 13 61 6674 26.51 930 936 216.4
C 8 128 4322 15.65 930 936 216.4
D 1 52 989159 4194.68 969 939 235.6
D 8 195 135557 571.41 969 939 235.6
D 10 199 124806 525.78 969 939 235.6

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