ASTROSAT CZTI

Data Quality Report

Orbit 14508

Creation date: 2024-06-27T16:56:11.484190
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/AS1G08_066T01_9000002138_14508cztM0_level2.evt modeM0/AS1G08_066T01_9000002138_14508cztM0_level2_quad_clean.evt
Size (bytes)549,406,080107,887,680
Size524.0 MB 102.9 MB
Events in quadrant A3,687,592688,060
Events in quadrant B3,790,694703,961
Events in quadrant C3,812,945698,722
Events in quadrant D4,818,181634,161

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161521
B0163950
C0162460
D0197790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77912693.452702%
B77912753.529714%
C77911812.323193%
D77917029.010397%

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 7792 7792 0 0 0.00% 0.00%
B 7792 7792 12 12 0.15% 0.15%
C 7792 7792 1 1 0.01% 0.01%
D 7792 7792 301 301 3.86% 3.86%

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 12 189 47680 244.66 938 917 191.1
A 0 23 9391 44.33 938 917 191.1
A 0 226 8784 41.16 938 917 191.1
B 0 189 30192 160.58 937 912 182.3
B 15 222 29703 157.9 937 912 182.3
B 10 252 24246 127.97 937 912 182.3
C 3 233 203590 938.93 924 926 215.8
C 13 61 6559 26.1 924 926 215.8
C 0 207 6115 24.04 924 926 215.8
D 10 199 1036399 4387.45 882 861 236.0
D 12 110 173099 729.75 882 861 236.0
D 13 122 138376 582.64 882 861 236.0

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