ASTROSAT CZTI

Data Quality Report

Orbit 21037

Creation date: 2024-06-27T18:22:48.599647
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_088T02_9000003106_21037cztM0_level2.evt modeM0/AS1A05_088T02_9000003106_21037cztM0_level2_quad_clean.evt
Size (bytes)573,474,240100,088,640
Size546.9 MB 95.5 MB
Events in quadrant A3,818,765640,159
Events in quadrant B4,256,194637,700
Events in quadrant C3,851,184608,830
Events in quadrant D4,900,826590,919

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166022
B0177422
C0166022
D0197562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79663534.431333%
B79674075.108573%
C79673784.744571%
D79674125.171332%

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 8436 7971 0 0 0.00% 0.00%
B 8437 7972 15 15 0.18% 0.19%
C 8437 7972 0 0 0.00% 0.00%
D 8437 7972 92 92 1.09% 1.15%

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 11724 53.19 990 963 202.3
A 0 226 8528 37.39 990 963 202.3
A 3 137 8443 36.97 990 963 202.3
B 7 220 227267 1198.44 982 957 188.8
B 0 189 61007 318.0 982 957 188.8
B 3 64 31905 163.89 982 957 188.8
C 14 238 146331 650.85 948 951 223.4
C 13 61 6538 25.01 948 951 223.4
C 8 128 5210 19.07 948 951 223.4
D 1 52 711541 3055.98 961 934 232.5
D 7 238 211811 906.88 961 934 232.5
D 1 239 142059 606.91 961 934 232.5

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