ASTROSAT CZTI

Data Quality Report

Orbit 25581

Creation date: 2024-06-27T19:19:12.989691
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_25581cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25581cztM0_level2_quad_clean.evt
Size (bytes)596,692,800103,890,240
Size569.1 MB 99.1 MB
Events in quadrant A4,073,363671,435
Events in quadrant B4,062,985677,386
Events in quadrant C3,887,878640,333
Events in quadrant D5,521,345618,265

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168040
B0166070
C0163180
D0213160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77442803.615702%
B77432703.487021%
C77432763.564510%
D77434285.527573%

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 7954 7746 44 44 0.55% 0.57%
B 7953 7745 1 1 0.01% 0.01%
C 7953 7745 3 3 0.04% 0.04%
D 7953 7745 206 206 2.59% 2.66%

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 4 2 188477 921.39 1000 979 203.5
A 0 13 27894 132.26 1000 979 203.5
A 13 254 13420 61.14 1000 979 203.5
B 3 112 54724 280.85 987 962 191.4
B 0 219 54325 278.77 987 962 191.4
B 0 190 48567 248.69 987 962 191.4
C 14 238 151632 673.08 946 951 223.9
C 2 16 23140 99.12 946 951 223.9
C 0 207 16744 70.55 946 951 223.9
D 1 52 1325640 5642.43 959 931 234.8
D 8 195 376861 1601.23 959 931 234.8
D 13 174 94679 399.31 959 931 234.8

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