ASTROSAT CZTI

Data Quality Report

Orbit 00978

Creation date: 2024-06-27T14:05:37.901007
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_998T01_9000000188_00978cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00978cztM0_level2_quad_clean.evt
Size (bytes)984,519,36091,638,720
Size938.9 MB 87.4 MB
Events in quadrant A7,610,824589,052
Events in quadrant B7,709,437599,331
Events in quadrant C7,371,335581,937
Events in quadrant D6,712,506571,395

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270320
B0273550
C0262740
D0243820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6201921.483632%
B6201170.274149%
C6201150.241896%
D6201140.225770%

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 6961 6202 255 255 3.66% 4.11%
B 6961 6202 193 193 2.77% 3.11%
C 6961 6202 163 163 2.34% 2.63%
D 6961 6202 74 74 1.06% 1.19%

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 14 170 396561 871.84 1877 1889 452.7
A 12 189 9172 16.09 1877 1889 452.7
A 11 242 6988 11.26 1877 1889 452.7
B 0 220 57193 119.27 1970 1981 462.9
B 12 52 49074 101.73 1970 1981 462.9
B 15 22 47975 99.36 1970 1981 462.9
C 15 241 317577 646.06 1755 1813 488.8
C 9 52 122252 246.42 1755 1813 488.8
C 3 111 28167 53.92 1755 1813 488.8
D 1 4 155566 290.92 1708 1767 528.7
D 0 244 69020 127.21 1708 1767 528.7
D 12 217 21460 37.25 1708 1767 528.7

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