ASTROSAT CZTI

Data Quality Report

Orbit 34374

Creation date: 2022-02-05T17:51:20.843723
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_082T12_9000004908_34374cztM0_level2.evt modeM0/AS1A05_082T12_9000004908_34374cztM0_level2_quad_clean.evt
Size (bytes)566,256,96053,349,120
Size540.0 MB 50.9 MB
Events in quadrant A2,657,035323,280
Events in quadrant B3,369,379323,497
Events in quadrant C3,434,480317,978
Events in quadrant D7,319,992268,913

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112613
B0134402
C0136632
D0255522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5446160.293794%
B54461182.166728%
C5446581.065002%
D5446116821.446934%

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 7120 5447 6 6 0.08% 0.11%
B 7120 5447 74 74 1.04% 1.36%
C 7120 5447 45 45 0.63% 0.83%
D 7120 5447 1052 1052 14.78% 19.31%

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 9 143 51383 383.88 661 649 132.2
A 10 83 32607 241.81 661 649 132.2
A 13 6 16147 117.27 661 649 132.2
B 5 172 369858 2940.02 649 633 125.6
B 4 251 302235 2401.56 649 633 125.6
B 0 190 64991 512.46 649 633 125.6
C 4 254 532037 3575.69 638 642 148.6
C 15 214 229426 1539.46 638 642 148.6
C 0 10 106528 712.49 638 642 148.6
D 7 223 1454012 9878.79 595 577 147.1
D 12 235 1299574 8829.09 595 577 147.1
D 8 195 1085798 7376.09 595 577 147.1

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