ASTROSAT CZTI

Data Quality Report

Orbit 20191029_A07_007T05_9000003274_level2

Creation date: 2025-12-04T20:35:14.169626
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/AS1A07_007T05_9000003274cztM0_level2.fits modeM0/AS1A07_007T05_9000003274cztM0_level2_quad_clean.evt
Size (bytes)512,147,520434,355,840
Size488.4 MB 414.2 MB
Events in quadrant A3,214,3622,550,611
Events in quadrant B3,068,0022,554,313
Events in quadrant C3,066,7682,411,007
Events in quadrant D2,619,4082,095,723

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010500
B010500
C010500
D010500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01071760
B01088790
C01077830
D01449000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516053150.610406%
B516054610.893324%
C516055911.145238%
D5160537617.288053%

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 59185 51605 0 0 0.00% 0.00%
B 59185 51599 0 0 0.00% 0.00%
C 59184 51604 0 0 0.00% 0.00%
D 59185 51595 0 0 0.00% 0.00%

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 0 29 3048 11.16 835 784 202.9
A 7 110 2552 8.71 835 784 202.9
A 0 30 2392 7.92 835 784 202.9
B 2 9 2449 10.63 809 775 157.5
B 2 8 2075 8.26 809 775 157.5
B 5 128 2052 8.11 809 775 157.5
C 12 241 2135 6.6 809 756 208.9
C 3 234 2101 6.44 809 756 208.9
C 3 126 2089 6.38 809 756 208.9
D 10 189 1891 6.11 748 683 197.8
D 3 14 1888 6.09 748 683 197.8
D 6 231 1855 5.92 748 683 197.8

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