ASTROSAT CZTI

Data Quality Report

Orbit 16237

Creation date: 2024-06-27T17:19:45.218281
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/AS1T02_112T01_9000002390_16237cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16237cztM0_level2_quad_clean.evt
Size (bytes)453,525,12063,207,360
Size432.5 MB 60.3 MB
Events in quadrant A3,396,210376,081
Events in quadrant B3,334,276379,494
Events in quadrant C3,649,331371,757
Events in quadrant D2,951,192370,632

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137812
B0135861
C0148651
D0125701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59472073.480747%
B5947661.109803%
C5947741.244325%
D5947290.487641%

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 7108 5949 139 139 1.96% 2.34%
B 7108 5949 17 17 0.24% 0.29%
C 7108 5949 1 1 0.01% 0.02%
D 7108 5949 6 6 0.08% 0.10%

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 15 174 561854 3781.12 732 719 148.4
A 8 247 12731 80.94 732 719 148.4
A 0 226 6615 39.73 732 719 148.4
B 4 216 129628 914.38 747 731 141.0
B 7 220 92354 649.97 747 731 141.0
B 0 198 67155 471.21 747 731 141.0
C 3 233 717939 4332.81 717 722 165.5
C 14 238 111117 666.91 717 722 165.5
C 8 128 7717 42.26 717 722 165.5
D 1 52 118521 658.91 726 706 178.8
D 12 233 50686 279.53 726 706 178.8
D 10 70 25461 138.45 726 706 178.8

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