ASTROSAT CZTI

Data Quality Report

Orbit 25842

Creation date: 2024-06-27T19:22:00.405962
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/AS1A07_068T01_9000003756_25842cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25842cztM0_level2_quad_clean.evt
Size (bytes)573,891,840104,374,080
Size547.3 MB 99.5 MB
Events in quadrant A4,081,883664,667
Events in quadrant B3,947,729667,741
Events in quadrant C3,996,961631,918
Events in quadrant D4,800,940630,290

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173260
B0168910
C0171510
D0199520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8143921.129805%
B81441121.375246%
C81441201.473477%
D81441411.731336%

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 9043 8145 14 14 0.15% 0.17%
B 9044 8146 2 2 0.02% 0.02%
C 9044 8146 6 6 0.07% 0.07%
D 9044 8146 78 78 0.86% 0.96%

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 0 13 179740 881.09 1007 986 202.9
A 6 16 18069 84.2 1007 986 202.9
A 13 254 11834 53.47 1007 986 202.9
B 12 111 24236 120.5 999 972 193.1
B 11 111 21741 107.57 999 972 193.1
B 14 111 19477 95.85 999 972 193.1
C 14 238 147733 651.31 954 959 225.4
C 14 225 99867 438.91 954 959 225.4
C 3 233 34607 149.31 954 959 225.4
D 1 52 964159 4166.4 965 941 231.2
D 7 80 77144 329.62 965 941 231.2
D 14 35 44335 187.7 965 941 231.2

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