ASTROSAT CZTI

Data Quality Report

Orbit 37946

Creation date: 2024-06-27T21:46:30.570415
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/AS1A11_082T01_9000005356_37946cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37946cztM0_level2_quad_clean.evt
Size (bytes)470,891,52078,955,200
Size449.1 MB 75.3 MB
Events in quadrant A3,013,955501,841
Events in quadrant B3,439,537502,240
Events in quadrant C2,823,995512,538
Events in quadrant D4,588,045466,931

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125562
B0142601
C0120851
D0176631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5826140.240302%
B58261522.608994%
C5826150.257467%
D58264157.123241%

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 7108 5827 5 5 0.07% 0.09%
B 7108 5827 81 81 1.14% 1.39%
C 7108 5827 6 6 0.08% 0.10%
D 7108 5827 423 423 5.95% 7.26%

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 367156 2781.74 644 632 131.8
A 15 222 104723 790.0 644 632 131.8
A 7 3 24840 183.73 644 632 131.8
B 5 172 310012 2506.75 640 622 123.4
B 5 184 191992 1550.53 640 622 123.4
B 4 171 135149 1089.97 640 622 123.4
C 15 214 245660 1669.19 628 632 146.8
C 0 10 91795 621.02 628 632 146.8
C 14 254 17021 111.65 628 632 146.8
D 1 52 939182 6255.82 611 594 150.0
D 5 32 839384 5590.65 611 594 150.0
D 12 233 114348 758.19 611 594 150.0

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