ASTROSAT CZTI

Data Quality Report

Orbit 20282

Creation date: 2024-06-27T18:13:24.340832
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_174T01_9000003008_20282cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20282cztM0_level2_quad_clean.evt
Size (bytes)590,601,60084,957,120
Size563.2 MB 81.0 MB
Events in quadrant A3,559,782526,947
Events in quadrant B4,046,770538,360
Events in quadrant C3,455,424518,270
Events in quadrant D6,349,558501,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149001
B0163671
C0144611
D0235431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70071702.426145%
B70073164.509776%
C70061572.240936%
D7007101014.414157%

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 7542 7008 9 9 0.12% 0.13%
B 7542 7008 112 112 1.49% 1.60%
C 7541 7007 0 0 0.00% 0.00%
D 7542 7008 807 807 10.70% 11.52%

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 14 238 116026 666.76 854 834 172.8
A 4 2 88998 510.32 854 834 172.8
A 8 205 43529 247.13 854 834 172.8
B 4 142 349348 2135.85 841 818 163.2
B 7 220 274217 1675.44 841 818 163.2
B 0 197 60335 364.73 841 818 163.2
C 14 238 128926 663.61 824 830 193.0
C 3 233 82242 421.76 824 830 193.0
C 7 220 23675 118.35 824 830 193.0
D 1 52 3258204 17051.49 786 764 191.0
D 2 234 44726 230.12 786 764 191.0
D 7 238 36662 187.91 786 764 191.0

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