ASTROSAT CZTI

Data Quality Report

Orbit 23741

Creation date: 2024-06-27T18:58:11.726665
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/AS1A08_009T01_9000003516_23741cztM0_level2.evt modeM0/AS1A08_009T01_9000003516_23741cztM0_level2_quad_clean.evt
Size (bytes)501,200,640108,414,720
Size478.0 MB 103.4 MB
Events in quadrant A3,256,698704,259
Events in quadrant B3,586,642724,133
Events in quadrant C3,608,386691,136
Events in quadrant D4,244,321668,627

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146192
B0153053
C0152122
D0175172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7105220.309641%
B7105741.041520%
C71051141.604504%
D7105570.802252%

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 9130 7107 0 0 0.00% 0.00%
B 9130 7107 5 5 0.05% 0.07%
C 9130 7107 1 1 0.01% 0.01%
D 9130 7107 12 12 0.13% 0.17%

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 13 254 11879 65.09 844 827 169.8
A 3 137 7398 38.7 844 827 169.8
A 0 226 7106 36.98 844 827 169.8
B 0 189 108291 671.59 851 831 160.0
B 0 229 62263 383.93 851 831 160.0
B 3 64 54578 335.9 851 831 160.0
C 10 9 233785 1220.71 814 816 190.8
C 14 238 131857 686.63 814 816 190.8
C 7 247 48931 252.11 814 816 190.8
D 8 195 1056206 5330.8 814 787 198.0
D 1 52 34157 168.55 814 787 198.0
D 2 234 28552 140.24 814 787 198.0

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