ASTROSAT CZTI

Data Quality Report

Orbit 08357

Creation date: 2024-06-27T15:31:34.331479
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/AS1G07_046T01_9000001162_08357cztM0_level2.evt modeM0/AS1G07_046T01_9000001162_08357cztM0_level2_quad_clean.evt
Size (bytes)569,399,04079,689,600
Size543.0 MB 76.0 MB
Events in quadrant A3,967,715478,326
Events in quadrant B4,030,088472,804
Events in quadrant C3,577,593475,120
Events in quadrant D5,151,517456,338

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01682114
B0167516
C0157544
D0206102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76252082.727869%
B76262122.779963%
C76271301.704471%
D76283784.955427%

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 8113 7631 35 35 0.43% 0.46%
B 8113 7631 29 29 0.36% 0.38%
C 8113 7631 0 0 0.00% 0.00%
D 8113 7631 159 159 1.96% 2.08%

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 15 239 291145 1496.91 936 915 193.9
A 15 223 41036 206.93 936 915 193.9
A 13 14 17250 84.25 936 915 193.9
B 0 214 99238 538.24 939 916 182.7
B 10 16 89775 486.44 939 916 182.7
B 4 173 48543 260.72 939 916 182.7
C 8 208 8137 33.69 913 915 214.4
C 13 61 7070 28.71 913 915 214.4
C 8 128 4607 17.22 913 915 214.4
D 9 102 734779 3059.83 894 873 239.9
D 13 105 520773 2167.59 894 873 239.9
D 2 152 192359 798.35 894 873 239.9

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