ASTROSAT CZTI

Data Quality Report

Orbit 00564

Creation date: 2024-06-27T13:59:49.202889
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_015T03_9000000076_00564cztM0_level2.evt modeM0/AS1P01_015T03_9000000076_00564cztM0_level2_quad_clean.evt
Size (bytes)929,940,48092,900,160
Size886.9 MB 88.6 MB
Events in quadrant A7,055,070598,613
Events in quadrant B7,462,745610,892
Events in quadrant C6,347,276605,909
Events in quadrant D6,896,670576,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252012
B0264592
C0231912
D0247972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A603540.066280%
B6035290.480530%
C6035130.215410%
D6035851.408451%

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 8190 6036 103 103 1.26% 1.71%
B 8190 6036 190 190 2.32% 3.15%
C 8190 6036 80 80 0.98% 1.33%
D 8190 6036 343 343 4.19% 5.68%

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 0 238 51995 126.03 1789 1768 398.5
A 13 160 34573 82.31 1789 1768 398.5
A 12 133 28104 66.08 1789 1768 398.5
B 4 250 189740 454.03 1783 1796 413.9
B 8 4 188008 449.85 1783 1796 413.9
B 4 232 53727 125.45 1783 1796 413.9
C 0 221 133139 304.09 1561 1612 432.5
C 3 159 49925 111.7 1561 1612 432.5
C 15 241 15557 32.24 1561 1612 432.5
D 12 237 373383 790.21 1509 1569 470.5
D 13 41 213868 451.2 1509 1569 470.5
D 1 4 213167 449.71 1509 1569 470.5

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