ASTROSAT CZTI

Data Quality Report

Orbit 06258

Creation date: 2024-06-27T15:04:50.802104
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_151T01_9000000818_06258cztM0_level2.evt modeM0/AS1A02_151T01_9000000818_06258cztM0_level2_quad_clean.evt
Size (bytes)551,269,440113,846,400
Size525.7 MB 108.6 MB
Events in quadrant A3,667,650732,095
Events in quadrant B3,942,254736,325
Events in quadrant C3,552,864723,856
Events in quadrant D4,975,376685,377

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168883
B0175742
C0168062
D0209142

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8204500.609459%
B82041361.657728%
C8204390.475378%
D82042963.607996%

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 8674 8206 1 1 0.01% 0.01%
B 8674 8206 18 18 0.21% 0.22%
C 8674 8206 0 0 0.00% 0.00%
D 8674 8206 225 225 2.59% 2.74%

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 8 15 17288 85.98 935 913 190.4
A 13 210 16148 80.0 935 913 190.4
A 5 112 13538 66.29 935 913 190.4
B 3 64 206018 1126.01 946 924 182.1
B 11 51 28203 149.77 946 924 182.1
B 12 111 18569 96.88 946 924 182.1
C 13 61 7236 29.81 910 912 212.2
C 3 202 2251 6.31 910 912 212.2
C 8 222 2083 5.52 910 912 212.2
D 12 220 1167999 5306.01 892 863 220.0
D 13 105 199358 902.39 892 863 220.0
D 2 152 95271 429.19 892 863 220.0

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