ASTROSAT CZTI

Data Quality Report

Orbit 25562

Creation date: 2024-06-27T19:19:02.788588
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/AS1A09_043T02_9000003726_25562cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25562cztM0_level2_quad_clean.evt
Size (bytes)518,938,56066,934,080
Size494.9 MB 63.8 MB
Events in quadrant A3,548,138412,387
Events in quadrant B3,604,021418,234
Events in quadrant C3,514,658385,002
Events in quadrant D4,622,854371,837

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142690
B0144930
C0141330
D0181150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6289671.065352%
B6289751.192558%
C62901081.717011%
D62902153.418124%

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 7624 6290 1 1 0.01% 0.02%
B 7624 6290 2 2 0.03% 0.03%
C 7625 6291 3 3 0.04% 0.05%
D 7625 6291 138 138 1.81% 2.19%

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 9746 48.7 919 907 181.5
A 0 226 8098 39.62 919 907 181.5
A 3 137 7409 35.83 919 907 181.5
B 0 229 20036 112.45 912 896 170.2
B 12 111 19603 109.9 912 896 170.2
B 0 190 18042 100.73 912 896 170.2
C 14 238 140457 714.51 850 859 195.4
C 2 16 40111 200.91 850 859 195.4
C 3 233 19863 97.27 850 859 195.4
D 8 195 594093 2869.96 854 828 206.7
D 1 52 352662 1702.02 854 828 206.7
D 12 233 164524 791.89 854 828 206.7

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