ASTROSAT CZTI

Data Quality Report

Orbit 24104

Creation date: 2024-06-27T19:02:13.429137
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/AS1C05_012T04_9000003564_24104cztM0_level2.evt modeM0/AS1C05_012T04_9000003564_24104cztM0_level2_quad_clean.evt
Size (bytes)542,396,160138,614,400
Size517.3 MB 132.2 MB
Events in quadrant A3,388,012949,316
Events in quadrant B3,451,452956,819
Events in quadrant C3,591,998908,840
Events in quadrant D5,501,275876,692

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147981
B0149701
C0153701
D0213111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7277540.742064%
B7278690.948063%
C72771451.992579%
D72773274.493610%

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 7662 7278 0 0 0.00% 0.00%
B 7663 7279 0 0 0.00% 0.00%
C 7662 7278 23 23 0.30% 0.32%
D 7662 7278 250 250 3.26% 3.44%

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 13755 73.5 873 854 175.5
A 2 250 10000 52.11 873 854 175.5
A 4 2 9106 47.01 873 854 175.5
B 0 229 32978 197.16 866 844 163.0
B 12 111 19314 113.33 866 844 163.0
B 11 111 17071 99.56 866 844 163.0
C 0 239 192271 988.72 831 835 193.6
C 14 238 131202 673.31 831 835 193.6
C 7 247 19870 98.31 831 835 193.6
D 8 195 1408240 6922.68 840 813 203.3
D 11 176 425097 2086.92 840 813 203.3
D 1 52 260008 1274.9 840 813 203.3

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