ASTROSAT CZTI

Data Quality Report

Orbit 31456

Creation date: 2024-06-27T20:28:43.804484
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_029T01_9000004582_31456cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31456cztM0_level2_quad_clean.evt
Size (bytes)1,360,267,200194,120,640
Size1.3 GB 185.1 MB
Events in quadrant A8,218,9511,237,057
Events in quadrant B13,541,5681,251,004
Events in quadrant C9,711,0561,154,732
Events in quadrant D8,659,5431,145,922

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332263
B0503085
C0382573
D0354513

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15809890.562970%
B158084512.852986%
C158085203.289474%
D15809510.322601%

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 19744 15812 0 0 0.00% 0.00%
B 19743 15810 93 93 0.47% 0.59%
C 19743 15811 233 233 1.18% 1.47%
D 19744 15812 17 17 0.09% 0.11%

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 13 254 26769 59.01 2132 2096 418.1
A 3 137 21050 45.33 2132 2096 418.1
A 0 226 18154 38.4 2132 2096 418.1
B 6 159 4461673 11321.36 2101 2051 393.9
B 12 1 698647 1768.4 2101 2051 393.9
B 0 190 65562 161.23 2101 2051 393.9
C 10 22 831581 1799.37 1992 2013 461.0
C 0 10 547407 1182.98 1992 2013 461.0
C 14 238 339152 731.27 1992 2013 461.0
D 8 195 881413 1872.38 2021 1973 469.7
D 5 233 105593 220.61 2021 1973 469.7
D 2 234 54161 111.11 2021 1973 469.7

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