ASTROSAT CZTI

Data Quality Report

Orbit 30644

Creation date: 2024-06-27T20:18:05.828779
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/AS1A10_103T02_9000004416_30644cztM0_level2.evt modeM0/AS1A10_103T02_9000004416_30644cztM0_level2_quad_clean.evt
Size (bytes)802,612,80075,905,280
Size765.4 MB 72.4 MB
Events in quadrant A3,805,631489,500
Events in quadrant B5,342,082485,763
Events in quadrant C4,490,121458,083
Events in quadrant D10,244,729424,291

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154352
B0199602
C0176712
D0347902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63111762.788781%
B63112423.834575%
C631079912.662441%
D6310157224.912837%

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 7621 6312 25 25 0.33% 0.40%
B 7621 6312 7 7 0.09% 0.11%
C 7620 6311 113 113 1.48% 1.79%
D 7620 6311 1277 1277 16.76% 20.23%

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 13 211802 1164.53 928 914 181.1
A 8 192 19110 100.48 928 914 181.1
A 13 254 11926 60.81 928 914 181.1
B 6 159 1665755 10061.0 905 884 165.5
B 0 229 63836 380.43 905 884 165.5
B 6 36 36027 212.37 905 884 165.5
C 10 22 575087 2982.59 848 856 192.5
C 14 238 260074 1346.4 848 856 192.5
C 14 254 165326 854.27 848 856 192.5
D 8 195 6422982 32828.21 845 826 195.6
D 10 253 410611 2094.7 845 826 195.6
D 12 227 76157 385.07 845 826 195.6

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