ASTROSAT CZTI

Data Quality Report

Orbit 34567

Creation date: 2022-02-18T17:19:37.670801
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/AS1A05_167T01_9000004940_34567cztM0_level2.evt modeM0/AS1A05_167T01_9000004940_34567cztM0_level2_quad_clean.evt
Size (bytes)465,108,48057,853,440
Size443.6 MB 55.2 MB
Events in quadrant A2,643,916363,164
Events in quadrant B3,178,602363,649
Events in quadrant C2,810,321360,340
Events in quadrant D5,114,063313,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105733
B0124042
C0109692
D0189022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5008170.339457%
B50081122.236422%
C5008270.539137%
D50083867.707668%

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 7131 5009 8 8 0.11% 0.16%
B 7131 5009 76 76 1.07% 1.52%
C 7131 5009 21 21 0.29% 0.42%
D 7131 5009 358 358 5.02% 7.15%

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 10 83 41523 311.43 665 653 131.2
A 15 169 26575 197.53 665 653 131.2
A 13 254 9142 64.69 665 653 131.2
B 5 172 356700 2914.22 648 634 122.2
B 5 255 74123 601.47 648 634 122.2
B 0 229 55342 447.76 648 634 122.2
C 15 214 212428 1440.21 639 646 147.0
C 0 10 91472 617.65 639 646 147.0
C 15 159 11876 76.37 639 646 147.0
D 8 195 1320768 8648.36 623 605 152.6
D 7 80 939384 6149.92 623 605 152.6
D 2 250 76582 497.72 623 605 152.6

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