ASTROSAT CZTI

Data Quality Report

Orbit 20201002_T03_244T01_9000003912_level2

Creation date: 2021-01-07T21:50:13.655209
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1T03_244T01_9000003912cztM0_level2_bc.evt modeM0/AS1T03_244T01_9000003912cztM0_level2_quad_clean.evt
Size (bytes)8,193,294,7202,517,888,960
Size7.6 GB 2.3 GB
Events in quadrant A52,128,29116,414,335
Events in quadrant B49,314,67716,603,142
Events in quadrant C39,080,75215,970,440
Events in quadrant D95,063,52014,635,267

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037660
B037660
C037660
D037660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03080
B03080
C03080
D03080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04310990
B04180390
C03887090
D05901200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18450236321.968542%
B18450242702.314338%
C18450229681.608655%
D184502181779.851926%

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 215637 184510 174 174 0.08% 0.09%
B 215637 184507 237 237 0.11% 0.13%
C 215637 184507 9 9 0.00% 0.00%
D 215637 184502 5520 5520 2.56% 2.99%

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 14 235 6822783 3165.1 10105 9958 2152.5
A 6 16 5294814 2455.24 10105 9958 2152.5
A 12 189 399874 181.15 10105 9958 2152.5
B 10 245 5398499 2853.3 10195 9968 1888.5
B 3 112 1583310 833.11 10195 9968 1888.5
B 0 189 1272703 668.64 10195 9968 1888.5
C 15 208 779037 332.87 9806 9782 2311.0
C 2 16 366381 154.3 9806 9782 2311.0
C 3 233 109740 43.25 9806 9782 2311.0
D 1 52 43433036 18162.46 9483 9244 2390.9
D 7 38 7904598 3302.32 9483 9244 2390.9
D 2 250 4091754 1707.55 9483 9244 2390.9

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