ASTROSAT CZTI

Data Quality Report

Orbit 28000

Creation date: 2024-06-27T19:46:55.765240
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/AS1A10_021T08_9000004042_28000cztM0_level2.evt modeM0/AS1A10_021T08_9000004042_28000cztM0_level2_quad_clean.evt
Size (bytes)553,898,88079,231,680
Size528.2 MB 75.6 MB
Events in quadrant A3,567,473485,704
Events in quadrant B3,612,018491,123
Events in quadrant C3,757,916470,984
Events in quadrant D5,362,533463,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148960
B0150890
C0154960
D0206920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70011311.871161%
B70021662.370751%
C70022113.013425%
D70024866.940874%

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 7211 7002 0 0 0.00% 0.00%
B 7212 7003 1 1 0.01% 0.01%
C 7212 7003 7 7 0.10% 0.10%
D 7212 7003 335 335 4.65% 4.78%

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 0 13 177547 992.95 877 858 177.9
A 13 254 11271 58.52 877 858 177.9
A 3 137 8566 43.32 877 858 177.9
B 10 245 158732 933.66 867 841 169.1
B 0 190 26232 150.14 867 841 169.1
B 12 111 21235 120.59 867 841 169.1
C 3 233 265525 1340.15 839 846 197.5
C 14 238 134495 676.71 839 846 197.5
C 2 16 91141 457.19 839 846 197.5
D 8 195 801533 4007.17 833 812 199.8
D 1 52 602168 3009.45 833 812 199.8
D 7 80 412535 2060.45 833 812 199.8

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