ASTROSAT CZTI

Data Quality Report

Orbit 32256

Creation date: 2024-06-27T20:38:10.444037
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/AS1A09_131T01_9000004696_32256cztM0_level2.evt modeM0/AS1A09_131T01_9000004696_32256cztM0_level2_quad_clean.evt
Size (bytes)609,508,800115,041,600
Size581.3 MB 109.7 MB
Events in quadrant A3,282,542761,186
Events in quadrant B5,867,655755,522
Events in quadrant C3,644,883748,286
Events in quadrant D5,182,863723,980

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145283
B0229442
C0153272
D0202072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71051462.054891%
B71054025.657987%
C71053655.137227%
D71051922.702322%

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 7285 7108 0 0 0.00% 0.00%
B 7285 7108 83 83 1.14% 1.17%
C 7285 7107 6 6 0.08% 0.08%
D 7285 7108 82 82 1.13% 1.15%

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 6 21737 122.37 845 824 170.9
A 13 254 13313 73.08 845 824 170.9
A 3 137 8987 47.76 845 824 170.9
B 6 159 1934437 12238.55 824 802 158.0
B 4 80 522504 3302.01 824 802 158.0
B 5 172 91625 574.85 824 802 158.0
C 14 238 192083 1031.04 799 802 185.5
C 0 10 131849 706.37 799 802 185.5
C 14 254 86923 464.21 799 802 185.5
D 8 195 1464941 7668.14 812 788 190.9
D 12 233 407096 2127.94 812 788 190.9
D 1 52 85342 442.83 812 788 190.9

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