ASTROSAT CZTI

Data Quality Report

Orbit 30431

Creation date: 2024-06-27T20:15:10.692927
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_121T02_9000004378_30431cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30431cztM0_level2_quad_clean.evt
Size (bytes)779,448,960109,607,040
Size743.3 MB 104.5 MB
Events in quadrant A4,128,567714,025
Events in quadrant B6,440,420712,596
Events in quadrant C4,203,001698,383
Events in quadrant D8,283,098627,748

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176622
B0251022
C0176302
D0306362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81491061.300773%
B81502973.644172%
C81502442.993865%
D8150155019.018405%

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 8879 8150 1 1 0.01% 0.01%
B 8880 8151 1 1 0.01% 0.01%
C 8880 8151 0 0 0.00% 0.00%
D 8880 8151 1407 1407 15.84% 17.26%

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 14 239 86876 414.29 1022 999 207.3
A 0 13 31910 149.12 1022 999 207.3
A 8 192 26714 124.05 1022 999 207.3
B 6 159 2355386 12026.52 1012 984 195.8
B 0 229 59854 300.71 1012 984 195.8
B 0 230 25445 124.95 1012 984 195.8
C 14 238 173393 731.87 988 997 235.6
C 3 233 117750 495.65 988 997 235.6
C 14 254 25098 102.31 988 997 235.6
D 13 104 4411940 18184.47 909 895 242.6
D 8 195 141777 580.78 909 895 242.6
D 13 249 102027 416.92 909 895 242.6

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