ASTROSAT CZTI

Data Quality Report

Orbit 01022

Creation date: 2024-06-27T14:06:17.879906
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/AS1P01_998T02_9000000190_01022cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01022cztM0_level2_quad_clean.evt
Size (bytes)947,206,080103,510,080
Size903.3 MB 98.7 MB
Events in quadrant A7,157,740680,007
Events in quadrant B7,509,381691,189
Events in quadrant C7,136,169670,575
Events in quadrant D6,468,960658,520

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256851
B0267001
C0256351
D0236911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A622830.048170%
B6228120.192678%
C622810.016057%
D6228150.240848%

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 7098 6229 105 105 1.48% 1.69%
B 7098 6229 160 160 2.25% 2.57%
C 7098 6229 92 92 1.30% 1.48%
D 7098 6229 108 108 1.52% 1.73%

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 32 37179 79.66 1847 1860 443.3
A 12 243 18017 36.44 1847 1860 443.3
A 12 189 14547 28.62 1847 1860 443.3
B 0 191 61488 129.79 1937 1945 458.8
B 15 22 22898 45.67 1937 1945 458.8
B 5 249 21602 42.85 1937 1945 458.8
C 15 241 311044 640.61 1732 1794 482.7
C 3 111 27280 52.79 1732 1794 482.7
C 3 79 23212 44.37 1732 1794 482.7
D 1 83 173979 334.84 1669 1732 514.4
D 9 64 17190 30.05 1669 1732 514.4
D 2 253 15270 26.32 1669 1732 514.4

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