ASTROSAT CZTI

Data Quality Report

Orbit 25722

Creation date: 2024-06-27T19:20:47.534421
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_008T06_9000003748_25722cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25722cztM0_level2_quad_clean.evt
Size (bytes)507,260,160109,500,480
Size483.8 MB 104.4 MB
Events in quadrant A3,431,558720,309
Events in quadrant B3,578,126746,229
Events in quadrant C3,555,969722,237
Events in quadrant D4,375,537694,157

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141390
B0146790
C0146050
D0172800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6212881.416613%
B62131272.044101%
C62131852.977628%
D62132213.557058%

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 9037 6213 0 0 0.00% 0.00%
B 9038 6214 8 8 0.09% 0.13%
C 9038 6213 0 0 0.00% 0.00%
D 9038 6214 109 109 1.21% 1.75%

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 9 130 25225 139.69 882 866 174.4
A 13 254 10426 54.82 882 866 174.4
A 0 226 7516 38.14 882 866 174.4
B 5 172 29923 176.31 889 871 164.8
B 0 190 22024 128.37 889 871 164.8
B 12 111 18619 107.71 889 871 164.8
C 14 238 139077 690.47 869 879 200.1
C 3 233 21095 101.0 869 879 200.1
C 1 16 6124 26.21 869 879 200.1
D 1 52 902912 4296.35 871 849 210.0
D 2 244 62404 293.17 871 849 210.0
D 13 104 50291 235.48 871 849 210.0

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