ASTROSAT CZTI

Data Quality Report

Orbit 11862

Creation date: 2024-06-27T16:19:16.917564
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/AS1A04_088T03_9000001750_11862cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11862cztM0_level2_quad_clean.evt
Size (bytes)587,689,92081,653,760
Size560.5 MB 77.9 MB
Events in quadrant A3,997,447495,592
Events in quadrant B5,198,901483,584
Events in quadrant C3,512,236482,419
Events in quadrant D4,556,200463,975

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169312
B0205242
C0159782
D0187922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78621231.564487%
B78624856.168914%
C7862831.055711%
D78621612.047825%

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 8378 7864 2 2 0.02% 0.03%
B 8378 7864 231 231 2.76% 2.94%
C 8378 7864 0 0 0.00% 0.00%
D 8378 7864 59 59 0.70% 0.75%

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 13 252 175575 917.09 935 915 190.5
A 1 162 87058 452.31 935 915 190.5
A 1 178 45180 232.42 935 915 190.5
B 4 239 1034534 5912.19 916 891 174.8
B 4 173 183288 1043.27 916 891 174.8
B 3 64 129436 735.24 916 891 174.8
C 13 61 6696 27.8 900 900 208.5
C 14 234 2754 8.89 900 900 208.5
C 3 202 2214 6.3 900 900 208.5
D 1 52 590125 2726.95 895 869 216.1
D 8 195 217561 1002.8 895 869 216.1
D 13 104 153500 706.34 895 869 216.1

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