ASTROSAT CZTI

Data Quality Report

Orbit 39657

Creation date: 2024-06-27T22:07:24.015407
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/AS1A12_018T01_9000005488_39657cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39657cztM0_level2_quad_clean.evt
Size (bytes)960,203,520141,638,400
Size915.7 MB 135.1 MB
Events in quadrant A7,640,701990,787
Events in quadrant B4,026,6551,025,272
Events in quadrant C13,558,819770,625
Events in quadrant D9,605,454860,556

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290013
B0187832
C0467162
D0349962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92361571.699870%
B9236190.205717%
C9236233225.249026%
D92367157.741447%

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 10548 9237 120 120 1.14% 1.30%
B 10548 9237 7 7 0.07% 0.08%
C 10548 9237 2224 2224 21.08% 24.08%
D 10548 9237 668 668 6.33% 7.23%

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 15 222 3140710 15836.7 982 962 198.3
A 10 83 650232 3274.88 982 962 198.3
A 13 6 28668 139.74 982 962 198.3
B 5 172 101322 531.93 981 951 188.7
B 12 111 23981 122.05 981 951 188.7
B 11 111 22016 111.64 981 951 188.7
C 15 208 6446828 31094.27 888 892 207.3
C 9 187 2648798 12773.12 888 892 207.3
C 14 254 449767 2165.31 888 892 207.3
D 12 227 5233142 22614.16 945 917 231.4
D 1 52 238376 1026.32 945 917 231.4
D 13 174 176019 756.81 945 917 231.4

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