ASTROSAT CZTI

Data Quality Report

Orbit 23017

Creation date: 2024-06-27T18:48:51.140132
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_004T01_9000003404_23017cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23017cztM0_level2_quad_clean.evt
Size (bytes)482,719,68092,862,720
Size460.4 MB 88.6 MB
Events in quadrant A2,881,717607,822
Events in quadrant B3,138,331618,712
Events in quadrant C3,003,070590,083
Events in quadrant D5,173,076560,647

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127041
B0133731
C0129661
D0195371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6232590.946727%
B62331131.812931%
C62331041.668538%
D62334156.658110%

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 7157 6233 0 0 0.00% 0.00%
B 7158 6234 27 27 0.38% 0.43%
C 7158 6234 8 8 0.11% 0.13%
D 7158 6234 558 558 7.80% 8.95%

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 8990 55.72 747 732 148.2
A 3 137 6494 38.88 747 732 148.2
A 0 226 6170 36.69 747 732 148.2
B 4 216 102966 724.23 746 727 141.2
B 7 219 52190 364.55 746 727 141.2
B 7 235 26906 185.45 746 727 141.2
C 14 238 114333 685.11 715 719 165.8
C 10 22 77686 464.12 715 719 165.8
C 7 247 11406 64.44 715 719 165.8
D 1 52 2219192 12798.26 712 689 173.3
D 13 153 159889 918.4 712 689 173.3
D 13 172 50860 289.43 712 689 173.3

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