ASTROSAT CZTI

Data Quality Report

Orbit 31097

Creation date: 2024-06-27T20:23:20.063077
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/AS1A10_109T01_9000004492_31097cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31097cztM0_level2_quad_clean.evt
Size (bytes)627,410,880118,448,640
Size598.3 MB 113.0 MB
Events in quadrant A3,736,828781,600
Events in quadrant B5,914,901775,847
Events in quadrant C3,975,309755,008
Events in quadrant D4,853,702740,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161183
B0235025
C0167453
D0195483

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76791712.226852%
B76783244.219849%
C76782743.568638%
D76782042.656942%

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 7744 7682 0 0 0.00% 0.00%
B 7743 7681 0 0 0.00% 0.00%
C 7743 7681 6 6 0.08% 0.08%
D 7743 7681 88 88 1.14% 1.15%

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 13877 66.54 967 949 194.3
A 3 137 10260 47.93 967 949 194.3
A 0 226 8137 37.0 967 949 194.3
B 6 159 2058042 11165.64 951 925 184.2
B 0 183 68193 365.12 951 925 184.2
B 0 229 23805 124.19 951 925 184.2
C 14 238 149487 675.25 934 942 220.0
C 0 10 131740 594.58 934 942 220.0
C 10 22 29193 128.42 934 942 220.0
D 13 174 688107 3080.4 939 914 223.1
D 8 195 543159 2430.66 939 914 223.1
D 2 250 65185 288.1 939 914 223.1

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