ASTROSAT CZTI

Data Quality Report

Orbit 31333

Creation date: 2024-06-27T20:26:51.276278
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/AS1T04_025T01_9000004538_31333cztM0_level2.evt modeM0/AS1T04_025T01_9000004538_31333cztM0_level2_quad_clean.evt
Size (bytes)572,304,960131,258,880
Size545.8 MB 125.2 MB
Events in quadrant A3,217,977903,611
Events in quadrant B5,950,757884,744
Events in quadrant C3,724,343858,610
Events in quadrant D3,975,103850,998

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140122
B0225912
C0152852
D0163142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6857470.685431%
B68572774.039667%
C68572143.120898%
D68571181.720869%

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 8572 6859 6 6 0.07% 0.09%
B 8572 6859 69 69 0.80% 1.01%
C 8572 6859 11 11 0.13% 0.16%
D 8572 6859 72 72 0.84% 1.05%

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 17498 100.18 829 813 166.6
A 13 254 11828 66.13 829 813 166.6
A 3 137 8387 45.47 829 813 166.6
B 6 159 1970780 12481.47 813 789 157.8
B 4 80 698323 4419.44 813 789 157.8
B 0 190 54620 341.06 813 789 157.8
C 3 233 291621 1588.79 787 792 183.1
C 14 238 170330 926.18 787 792 183.1
C 0 10 111749 606.16 787 792 183.1
D 8 195 612767 3233.3 797 774 189.3
D 12 233 228354 1202.36 797 774 189.3
D 12 79 44053 228.65 797 774 189.3

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