ASTROSAT CZTI

Data Quality Report

Orbit 31110

Creation date: 2024-06-27T20:23:29.644151
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/AS1A10_109T01_9000004492_31110cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31110cztM0_level2_quad_clean.evt
Size (bytes)591,433,920105,471,360
Size564.0 MB 100.6 MB
Events in quadrant A3,455,240693,019
Events in quadrant B5,489,277689,324
Events in quadrant C4,190,687666,777
Events in quadrant D4,304,809659,763

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146502
B0212152
C0168562
D0174482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6965380.545585%
B69661882.698823%
C69664466.402527%
D6966731.047947%

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 8795 6967 0 0 0.00% 0.00%
B 8796 6968 1 1 0.01% 0.01%
C 8796 6968 140 140 1.59% 2.01%
D 8796 6968 14 14 0.16% 0.20%

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 13 254 11524 59.3 895 878 179.5
A 3 137 9070 45.63 895 878 179.5
A 0 226 7318 35.87 895 878 179.5
B 6 159 1973600 11605.17 884 863 170.0
B 0 183 28870 164.76 884 863 170.0
B 12 111 21164 119.42 884 863 170.0
C 10 22 507568 2536.35 849 856 199.8
C 0 10 183403 913.74 849 856 199.8
C 14 238 134172 667.31 849 856 199.8
D 8 195 434858 2096.08 871 850 207.1
D 13 174 408012 1966.43 871 850 207.1
D 7 64 76728 366.46 871 850 207.1

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