ASTROSAT CZTI

Data Quality Report

Orbit 05721

Creation date: 2024-06-27T14:58:22.408889
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/AS1A02_098T01_9000000736_05721cztM0_level2.evt modeM0/AS1A02_098T01_9000000736_05721cztM0_level2_quad_clean.evt
Size (bytes)540,538,56095,434,560
Size515.5 MB 91.0 MB
Events in quadrant A4,036,030585,323
Events in quadrant B4,611,524592,334
Events in quadrant C3,475,926601,619
Events in quadrant D3,722,912574,062

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01738320
B01880635
C01598620
D01659415

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12513186377920
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77131902.463374%
B77081231.595745%
C7711250.324212%
D7714330.427794%

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 7799 7721 129 129 1.65% 1.67%
B 7799 7720 27 27 0.35% 0.35%
C 7799 7721 0 0 0.00% 0.00%
D 7799 7721 8 8 0.10% 0.10%

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 50 479153 2555.74 910 887 187.1
A 14 31 13384 66.78 910 887 187.1
A 13 14 13166 65.62 910 887 187.1
B 15 204 643205 3627.93 923 900 177.0
B 0 214 126688 710.49 923 900 177.0
B 4 48 69303 386.36 923 900 177.0
C 9 16 8551 36.9 887 891 207.6
C 13 61 7115 29.98 887 891 207.6
C 8 222 4745 18.57 887 891 207.6
D 2 152 127313 573.31 892 867 220.6
D 8 195 57881 258.5 892 867 220.6
D 0 11 38532 170.77 892 867 220.6

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