ASTROSAT CZTI

Data Quality Report

Orbit 27362

Creation date: 2024-06-27T19:39:23.134709
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/AS1T03_249T01_9000003934_27362cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27362cztM0_level2_quad_clean.evt
Size (bytes)592,416,00078,266,880
Size565.0 MB 74.6 MB
Events in quadrant A3,627,648480,012
Events in quadrant B4,035,415478,891
Events in quadrant C4,826,203439,403
Events in quadrant D4,953,903459,941

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152770
B0165140
C0189900
D0195820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73451001.361470%
B73452503.403676%
C73455146.997958%
D73442583.513072%

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 7615 7346 3 3 0.04% 0.04%
B 7615 7346 79 79 1.04% 1.08%
C 7615 7345 268 268 3.52% 3.65%
D 7614 7345 118 118 1.55% 1.61%

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 12 96 23482 120.17 930 911 187.8
A 13 254 12153 59.85 930 911 187.8
A 3 137 8686 41.39 930 911 187.8
B 5 172 411969 2355.09 911 889 174.5
B 12 111 21278 116.81 911 889 174.5
B 11 111 18957 103.51 911 889 174.5
C 2 16 1326066 6581.38 858 864 201.4
C 14 238 135302 667.66 858 864 201.4
C 15 208 11608 53.36 858 864 201.4
D 1 52 979310 4307.1 892 873 227.2
D 2 250 391158 1718.04 892 873 227.2
D 10 103 54359 235.45 892 873 227.2

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