ASTROSAT CZTI

Data Quality Report

Orbit 23275

Creation date: 2024-06-27T18:52:12.589377
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/AS1C05_005T01_9000003440_23275cztM0_level2.evt modeM0/AS1C05_005T01_9000003440_23275cztM0_level2_quad_clean.evt
Size (bytes)520,655,04088,490,880
Size496.5 MB 84.4 MB
Events in quadrant A3,352,036573,234
Events in quadrant B3,505,850581,110
Events in quadrant C3,461,087555,784
Events in quadrant D5,029,565537,607

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140342
B0144453
C0143242
D0192372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6188981.583710%
B61871412.278972%
C61871452.343624%
D61874246.853079%

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 7488 6188 0 0 0.00% 0.00%
B 7487 6187 25 25 0.33% 0.40%
C 7487 6187 0 0 0.00% 0.00%
D 7487 6187 301 301 4.02% 4.87%

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 13 254 10701 57.44 869 854 171.4
A 0 226 7500 38.77 869 854 171.4
A 3 137 6754 34.42 869 854 171.4
B 4 200 62687 389.11 862 844 158.9
B 5 172 43574 268.85 862 844 158.9
B 12 111 17967 107.74 862 844 158.9
C 14 238 136234 711.29 838 845 190.3
C 7 247 20791 104.79 838 845 190.3
C 3 233 14083 69.55 838 845 190.3
D 1 52 976292 4806.71 841 819 202.9
D 7 238 530054 2607.84 841 819 202.9
D 12 233 198795 975.54 841 819 202.9

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