ASTROSAT CZTI

Data Quality Report

Orbit 25640

Creation date: 2024-06-27T19:19:51.804694
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_013T02_9000003734_25640cztM0_level2.evt modeM0/AS1A09_013T02_9000003734_25640cztM0_level2_quad_clean.evt
Size (bytes)509,950,08092,652,480
Size486.3 MB 88.4 MB
Events in quadrant A3,594,364584,971
Events in quadrant B3,518,855593,869
Events in quadrant C3,429,821562,200
Events in quadrant D4,398,214550,013

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151500
B0151680
C0150440
D0180480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73961461.974040%
B73971712.311748%
C73971832.473976%
D73971281.730431%

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 7611 7397 1 1 0.01% 0.01%
B 7612 7398 0 0 0.00% 0.00%
C 7612 7398 0 0 0.00% 0.00%
D 7612 7398 25 25 0.33% 0.34%

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 8 192 186622 1039.53 882 864 178.7
A 13 254 11694 60.61 882 864 178.7
A 3 137 8448 42.44 882 864 178.7
B 3 112 37496 217.22 879 856 168.7
B 12 111 21003 119.44 879 856 168.7
B 11 111 18678 105.66 879 856 168.7
C 14 238 137164 690.17 842 847 197.5
C 3 233 11825 55.58 842 847 197.5
C 13 61 5814 25.15 842 847 197.5
D 8 195 848571 3805.49 845 823 222.8
D 1 52 301668 1350.47 845 823 222.8
D 2 234 29707 129.66 845 823 222.8

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