ASTROSAT CZTI

Data Quality Report

Orbit 00778

Creation date: 2024-06-27T14:02:48.987055
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/AS1P01_010T01_9000000108_00778cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00778cztM0_level2_quad_clean.evt
Size (bytes)970,519,68095,932,800
Size925.6 MB 91.5 MB
Events in quadrant A7,181,305633,002
Events in quadrant B7,576,925626,042
Events in quadrant C7,382,923607,812
Events in quadrant D6,841,946608,150

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256700
B0268750
C0263430
D0247460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6159240.389674%
B6159250.405910%
C61592043.312226%
D6159350.568274%

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 7229 6160 181 181 2.50% 2.94%
B 7229 6160 200 200 2.77% 3.25%
C 7229 6160 384 384 5.31% 6.23%
D 7229 6160 165 165 2.28% 2.68%

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 15 17 31207 65.76 1855 1872 446.1
A 15 171 22484 46.21 1855 1872 446.1
A 8 192 12929 24.79 1855 1872 446.1
B 0 220 88910 191.5 1938 1949 454.1
B 0 157 32051 66.29 1938 1949 454.1
B 5 191 19204 38.0 1938 1949 454.1
C 10 17 603070 1264.61 1704 1759 475.5
C 15 241 47612 96.43 1704 1759 475.5
C 3 111 33034 65.77 1704 1759 475.5
D 1 4 162651 310.3 1673 1727 518.6
D 6 226 134113 255.27 1673 1727 518.6
D 13 25 60269 112.88 1673 1727 518.6

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