ASTROSAT CZTI

Data Quality Report

Orbit 21790

Creation date: 2024-06-27T18:32:15.051490
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/AS1A07_006T01_9000003226_21790cztM0_level2.evt modeM0/AS1A07_006T01_9000003226_21790cztM0_level2_quad_clean.evt
Size (bytes)827,812,80089,904,960
Size789.5 MB 85.7 MB
Events in quadrant A3,973,296579,016
Events in quadrant B4,065,831590,725
Events in quadrant C3,799,846576,508
Events in quadrant D12,701,964431,474

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01602
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01664259
B01694342
C01629869
D043231111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78233113.975457%
B78283714.739397%
C78203814.872123%
D7818379748.567409%

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 8367 7835 0 0 0.00% 0.00%
B 8366 7842 12 12 0.14% 0.15%
C 8367 7836 0 0 0.00% 0.00%
D 8367 7825 3014 3014 36.02% 38.52%

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 13 252 110181 553.9 973 951 197.2
A 14 235 99981 502.18 973 951 197.2
A 13 254 14096 66.66 973 951 197.2
B 3 64 104460 551.28 972 945 187.8
B 0 190 61529 322.65 972 945 187.8
B 0 197 33727 174.58 972 945 187.8
C 14 238 145556 654.28 937 941 221.0
C 13 61 6442 24.89 937 941 221.0
C 15 78 2235 5.85 937 941 221.0
D 7 238 8749115 44754.52 805 781 195.5
D 1 52 333815 1703.73 805 781 195.5
D 7 223 252878 1289.67 805 781 195.5

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