ASTROSAT CZTI

Data Quality Report

Orbit 19492

Creation date: 2024-06-27T18:03:25.716049
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_062T01_9000002892_19492cztM0_level2.evt modeM0/AS1A05_062T01_9000002892_19492cztM0_level2_quad_clean.evt
Size (bytes)991,339,200167,175,360
Size945.4 MB 159.4 MB
Events in quadrant A6,847,7061,048,455
Events in quadrant B6,658,6411,067,855
Events in quadrant C6,919,2061,029,539
Events in quadrant D8,696,657996,927

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289523
B0282273
C0285803
D0346453

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133221210.908272%
B133231491.118367%
C133231901.426105%
D133234333.250019%

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 15777 13325 11 11 0.07% 0.08%
B 15778 13326 36 36 0.23% 0.27%
C 15778 13324 14 14 0.09% 0.11%
D 15778 13325 297 297 1.88% 2.23%

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 10 253 597656 1843.72 1611 1573 323.3
A 11 47 25820 75.0 1611 1573 323.3
A 11 29 19170 54.43 1611 1573 323.3
B 7 220 138614 448.8 1607 1566 305.4
B 3 64 53815 171.1 1607 1566 305.4
B 4 171 47795 151.39 1607 1566 305.4
C 9 221 312515 856.07 1560 1571 363.2
C 14 238 241047 659.31 1560 1571 363.2
C 3 233 168656 460.01 1560 1571 363.2
D 7 238 739401 1961.22 1559 1514 376.2
D 1 52 726957 1928.14 1559 1514 376.2
D 7 223 536789 1422.7 1559 1514 376.2

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