ASTROSAT CZTI

Data Quality Report

Orbit 34396

Creation date: 2022-02-07T04:26:59.432853
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_085T01_9000004910_34396cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34396cztM0_level2_quad_clean.evt
Size (bytes)517,887,36059,826,240
Size493.9 MB 57.1 MB
Events in quadrant A2,325,750400,079
Events in quadrant B2,556,235405,037
Events in quadrant C2,557,262397,179
Events in quadrant D7,901,805253,266

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103243
B0109272
C0106572
D0269612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A506780.157884%
B5067280.552595%
C5067240.473653%
D5067149129.425696%

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 6980 5068 2 2 0.03% 0.04%
B 6980 5068 14 14 0.20% 0.28%
C 6980 5068 13 13 0.19% 0.26%
D 6980 5067 1475 1475 21.13% 29.11%

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 34016 280.98 585 575 119.0
A 9 143 16264 131.82 585 575 119.0
A 13 6 11200 89.27 585 575 119.0
B 5 172 90702 804.65 586 569 112.0
B 0 190 84098 745.69 586 569 112.0
B 4 232 15476 133.08 586 569 112.0
C 15 214 214025 1608.81 571 576 132.7
C 0 10 98709 739.65 571 576 132.7
C 14 67 5545 37.45 571 576 132.7
D 7 223 4492034 37972.54 475 461 118.3
D 8 195 597923 5051.05 475 461 118.3
D 2 249 353637 2985.81 475 461 118.3

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