ASTROSAT CZTI

Data Quality Report

Orbit 06450

Creation date: 2024-06-27T15:07:22.870500
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/AS1A02_191T01_9000000854_06450cztM0_level2.evt modeM0/AS1A02_191T01_9000000854_06450cztM0_level2_quad_clean.evt
Size (bytes)515,309,76087,408,000
Size491.4 MB 83.4 MB
Events in quadrant A3,142,726546,051
Events in quadrant B3,234,514556,950
Events in quadrant C3,105,143545,791
Events in quadrant D5,652,533514,359

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141853
B0143692
C0141722
D0217852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6948360.518135%
B6948440.633276%
C6948240.345423%
D69483104.461716%

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 8768 6950 0 0 0.00% 0.00%
B 8768 6950 0 0 0.00% 0.00%
C 8768 6950 0 0 0.00% 0.00%
D 8768 6950 124 124 1.41% 1.78%

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 8 15 16531 94.64 809 792 166.3
A 0 226 7750 41.84 809 792 166.3
A 12 194 7483 40.23 809 792 166.3
B 4 81 22504 135.89 821 800 159.7
B 12 111 16360 97.42 821 800 159.7
B 0 228 15475 91.88 821 800 159.7
C 9 54 8861 43.79 790 791 184.3
C 13 61 6269 29.72 790 791 184.3
C 1 16 6201 29.35 790 791 184.3
D 2 63 2389765 12510.19 779 754 191.0
D 8 195 110221 573.23 779 754 191.0
D 2 136 66858 346.16 779 754 191.0

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