ASTROSAT CZTI

Data Quality Report

Orbit 19302

Creation date: 2024-06-27T18:01:08.818035
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_204T01_9000002856_19302cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19302cztM0_level2_quad_clean.evt
Size (bytes)1,068,721,920158,155,200
Size1019.2 MB 150.8 MB
Events in quadrant A6,501,287996,790
Events in quadrant B6,615,3801,010,863
Events in quadrant C6,480,253966,250
Events in quadrant D11,841,334867,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282978
B0283124
C0281514
D0446354

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A137212241.632534%
B137222571.872905%
C137222601.894768%
D13722190313.868241%

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 15101 13722 2 2 0.01% 0.01%
B 15102 13723 0 0 0.00% 0.00%
C 15102 13725 0 0 0.00% 0.00%
D 15102 13724 1585 1585 10.50% 11.55%

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 9 143 72182 210.08 1655 1615 335.9
A 4 2 37314 106.28 1655 1615 335.9
A 13 254 18255 49.54 1655 1615 335.9
B 0 229 86401 267.19 1648 1600 317.4
B 12 111 40309 121.97 1648 1600 317.4
B 11 111 35626 107.21 1648 1600 317.4
C 14 238 242955 641.81 1590 1600 376.1
C 9 54 30757 77.53 1590 1600 376.1
C 13 61 11046 25.12 1590 1600 376.1
D 1 52 4231519 11398.8 1531 1486 371.1
D 10 199 936050 2518.4 1531 1486 371.1
D 7 238 561561 1509.25 1531 1486 371.1

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