ASTROSAT CZTI

Data Quality Report

Orbit 16337

Creation date: 2024-06-27T17:21:16.213960
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_149T04_9000002410_16337cztM0_level2.evt modeM0/AS1A05_149T04_9000002410_16337cztM0_level2_quad_clean.evt
Size (bytes)638,040,96073,500,480
Size608.5 MB 70.1 MB
Events in quadrant A5,399,362447,144
Events in quadrant B7,451,083393,596
Events in quadrant C2,981,988492,392
Events in quadrant D3,090,611478,592

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201141
B0262631
C0127351
D0133841

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5900106518.050847%
B5900195233.084746%
C5900681.152542%
D5900631.067797%

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 6826 5902 925 925 13.55% 15.67%
B 6826 5902 1326 1326 19.43% 22.47%
C 6826 5902 3 3 0.04% 0.05%
D 6826 5902 38 38 0.56% 0.64%

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 15 174 2894111 21941.79 650 635 131.9
A 0 226 5673 38.2 650 635 131.9
A 12 194 4713 30.92 650 635 131.9
B 3 112 4388373 39325.17 589 576 111.6
B 10 247 249083 2227.22 589 576 111.6
B 10 16 181850 1624.65 589 576 111.6
C 3 233 241590 1529.81 671 676 157.5
C 14 238 103366 652.08 671 676 157.5
C 0 207 18211 111.35 671 676 157.5
D 12 218 319783 1910.74 678 656 167.0
D 10 70 100762 599.37 678 656 167.0
D 12 110 63663 377.25 678 656 167.0

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