ASTROSAT CZTI

Data Quality Report

Orbit 36026

Creation date: 2022-08-09T20:56:54.639171
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/AS1T04_069T01_9000005158_36026cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36026cztM0_level2_quad_clean.evt
Size (bytes)463,515,84065,341,440
Size442.0 MB 62.3 MB
Events in quadrant A2,561,909414,637
Events in quadrant B2,900,466416,979
Events in quadrant C3,106,666397,305
Events in quadrant D5,104,324373,791

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110823
B0121192
C0124102
D0188282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A536180.149226%
B5361591.100541%
C53611693.152397%
D536158110.837530%

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 7094 5362 1 1 0.01% 0.02%
B 7094 5362 28 28 0.39% 0.52%
C 7094 5362 135 135 1.90% 2.52%
D 7094 5362 601 601 8.47% 11.21%

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 164745 1296.27 619 607 126.6
A 13 254 8089 59.09 619 607 126.6
A 3 137 6612 47.42 619 607 126.6
B 4 171 178850 1498.13 618 602 119.0
B 0 213 89078 743.62 618 602 119.0
B 0 190 79395 662.24 618 602 119.0
C 0 10 338459 2419.19 594 600 139.7
C 9 187 223348 1594.95 594 600 139.7
C 15 214 220729 1576.2 594 600 139.7
D 12 227 1831941 12865.42 577 561 142.3
D 12 235 525787 3689.7 577 561 142.3
D 10 118 153363 1073.43 577 561 142.3

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