ASTROSAT CZTI

Data Quality Report

Orbit 22685

Creation date: 2024-06-27T18:44:26.497919
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/AS1A08_007T01_9000003362_22685cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22685cztM0_level2_quad_clean.evt
Size (bytes)512,786,88091,958,400
Size489.0 MB 87.7 MB
Events in quadrant A3,402,993587,658
Events in quadrant B3,656,776589,899
Events in quadrant C3,491,877563,289
Events in quadrant D4,498,403551,741

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146242
B0151722
C0148712
D0181362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7072771.088801%
B70721001.414027%
C70721291.824095%
D70712443.450714%

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 7612 7073 0 0 0.00% 0.00%
B 7612 7073 2 2 0.03% 0.03%
C 7612 7073 25 25 0.33% 0.35%
D 7611 7072 136 136 1.79% 1.92%

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 13 254 12952 68.21 880 861 177.3
A 0 226 7696 38.56 880 861 177.3
A 3 137 6946 34.33 880 861 177.3
B 0 219 76693 464.89 874 855 163.1
B 0 190 51517 310.56 874 855 163.1
B 0 228 33792 201.91 874 855 163.1
C 14 238 131676 679.07 832 836 192.7
C 10 22 93689 481.91 832 836 192.7
C 0 239 18018 89.18 832 836 192.7
D 9 1 365970 1787.45 845 821 204.3
D 7 238 347891 1698.95 845 821 204.3
D 12 235 174532 850.34 845 821 204.3

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