ASTROSAT CZTI

Data Quality Report

Orbit 17576

Creation date: 2024-06-27T17:38:11.883050
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/AS1A05_056T01_9000002604_17576cztM0_level2.evt modeM0/AS1A05_056T01_9000002604_17576cztM0_level2_quad_clean.evt
Size (bytes)600,105,60094,199,040
Size572.3 MB 89.8 MB
Events in quadrant A6,089,093501,556
Events in quadrant B3,814,652621,567
Events in quadrant C3,898,990595,000
Events in quadrant D3,848,725598,451

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230322
B0163542
C0166072
D0167222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7707137417.827949%
B77072413.127027%
C77072373.075127%
D77071321.712729%

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 8562 7708 939 939 10.97% 12.18%
B 8562 7708 0 0 0.00% 0.00%
C 8562 7709 0 0 0.00% 0.00%
D 8562 7709 28 28 0.33% 0.36%

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 14 237 2779995 15685.1 861 842 177.2
A 0 226 7444 37.26 861 842 177.2
A 3 137 6835 33.82 861 842 177.2
B 0 230 47443 247.68 956 929 187.8
B 12 111 22876 116.86 956 929 187.8
B 11 111 20031 101.71 956 929 187.8
C 3 233 183952 854.58 912 916 214.2
C 14 238 139882 648.82 912 916 214.2
C 0 207 14332 62.64 912 916 214.2
D 5 222 198508 873.7 936 908 226.2
D 13 189 88202 385.97 936 908 226.2
D 2 234 29494 126.39 936 908 226.2

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