ASTROSAT CZTI

Data Quality Report

Orbit 35319

Creation date: 2022-04-10T13:17:31.123209
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/AS1T05_023T01_9000005058_35319cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35319cztM0_level2_quad_clean.evt
Size (bytes)906,658,560104,238,720
Size864.7 MB 99.4 MB
Events in quadrant A4,710,109667,959
Events in quadrant B9,025,550601,345
Events in quadrant C5,199,620643,412
Events in quadrant D7,904,065606,581

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193776
B0329672
C0207292
D0299842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9175280.305177%
B9176152516.619442%
C91761661.809067%
D91763694.021360%

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 13122 9178 15 15 0.11% 0.16%
B 13122 9178 1080 1080 8.23% 11.77%
C 13122 9178 132 132 1.01% 1.44%
D 13122 9178 352 352 2.68% 3.84%

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 83 122304 544.6 1124 1107 222.5
A 15 169 117854 524.61 1124 1107 222.5
A 9 143 36831 160.53 1124 1107 222.5
B 5 236 3384572 17267.9 1043 1019 195.9
B 5 172 1510755 7704.91 1043 1019 195.9
B 12 111 24140 118.0 1043 1019 195.9
C 0 10 474443 1941.85 1068 1077 243.8
C 15 214 372062 1521.86 1068 1077 243.8
C 15 159 70665 285.47 1068 1077 243.8
D 12 235 1099535 4270.91 1065 1036 257.2
D 8 195 1038400 4033.22 1065 1036 257.2
D 7 80 760305 2952.0 1065 1036 257.2

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