ASTROSAT CZTI

Data Quality Report

Orbit 12656

Creation date: 2024-06-27T16:30:38.039830
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_174T01_9000001876_12656cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12656cztM0_level2_quad_clean.evt
Size (bytes)531,561,60079,706,880
Size506.9 MB 76.0 MB
Events in quadrant A3,368,580491,606
Events in quadrant B4,906,180454,665
Events in quadrant C3,418,856493,175
Events in quadrant D3,912,164468,812

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148262
B0192681
C0150861
D0166111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7245640.883368%
B72455808.005521%
C7245480.662526%
D72451031.421670%

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 7626 7246 0 0 0.00% 0.00%
B 7626 7246 418 418 5.48% 5.77%
C 7626 7246 5 5 0.07% 0.07%
D 7626 7246 67 67 0.88% 0.92%

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 12 189 53895 299.74 860 842 177.0
A 8 15 9988 51.67 860 842 177.0
A 0 226 7646 38.44 860 842 177.0
B 4 239 1357539 8433.56 836 818 160.9
B 11 51 90824 559.49 836 818 160.9
B 3 64 56558 346.49 836 818 160.9
C 15 208 107305 540.35 846 851 197.0
C 14 234 10349 48.21 846 851 197.0
C 13 61 6329 27.81 846 851 197.0
D 1 52 366896 1810.18 831 809 202.2
D 10 157 299148 1475.19 831 809 202.2
D 13 249 66595 325.29 831 809 202.2

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