ASTROSAT CZTI

Data Quality Report

Orbit 30917

Creation date: 2024-06-27T20:21:09.304219
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/AS1C06_007T01_9000004470_30917cztM0_level2.evt modeM0/AS1C06_007T01_9000004470_30917cztM0_level2_quad_clean.evt
Size (bytes)655,715,52097,182,720
Size625.3 MB 92.7 MB
Events in quadrant A3,692,495655,146
Events in quadrant B6,652,441659,165
Events in quadrant C3,596,082604,759
Events in quadrant D5,492,501584,557

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148712
B0240232
C0146962
D0206432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62901282.034976%
B62903295.230525%
C62906279.968203%
D62904356.915739%

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 7590 6291 92 92 1.21% 1.46%
B 7590 6290 134 134 1.77% 2.13%
C 7590 6290 21 21 0.28% 0.33%
D 7590 6291 384 384 5.06% 6.10%

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 0 13 563924 3502.46 808 794 160.8
A 13 254 12282 71.45 808 794 160.8
A 0 31 7899 44.19 808 794 160.8
B 6 159 1935973 12829.72 812 793 150.8
B 6 36 1344001 8905.11 812 793 150.8
B 0 190 43138 280.74 812 793 150.8
C 14 238 267910 1523.3 751 757 175.4
C 14 254 212501 1207.36 751 757 175.4
C 0 10 111488 631.38 751 757 175.4
D 12 218 1211571 6730.82 758 739 179.9
D 8 195 777664 4318.8 758 739 179.9
D 1 52 192985 1068.66 758 739 179.9

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