ASTROSAT CZTI

Data Quality Report

Orbit 08427

Creation date: 2024-06-27T15:32:38.221966
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/AS1A03_084T01_9000001188_08427cztM0_level2.evt modeM0/AS1A03_084T01_9000001188_08427cztM0_level2_quad_clean.evt
Size (bytes)751,982,40073,293,120
Size717.1 MB 69.9 MB
Events in quadrant A3,667,643459,567
Events in quadrant B4,040,778464,527
Events in quadrant C5,002,556451,215
Events in quadrant D9,559,466325,715

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158142
B0166541
C0198921
D0333351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74351972.649630%
B74352493.349025%
C74355797.787492%
D7435267936.032280%

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 7835 7435 9 9 0.11% 0.12%
B 7835 7435 44 44 0.56% 0.59%
C 7835 7435 188 188 2.40% 2.53%
D 7835 7436 2521 2521 32.18% 33.90%

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 15 174 28874 149.46 914 892 187.2
A 14 111 26910 138.97 914 892 187.2
A 4 2 25864 133.38 914 892 187.2
B 0 214 198534 1116.13 911 888 177.1
B 10 16 176548 991.97 911 888 177.1
B 11 51 45023 249.23 911 888 177.1
C 9 68 1598959 7837.36 871 874 203.9
C 13 61 6442 27.3 871 874 203.9
C 8 222 3907 14.87 871 874 203.9
D 1 52 6931127 41319.69 679 658 167.7
D 2 14 28025 163.16 679 658 167.7
D 2 234 20877 120.55 679 658 167.7

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