ASTROSAT CZTI

Data Quality Report

Orbit 46923

Creation date: 2024-06-27T23:29:29.779104
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/AS1A13_074T06_9000006284_46923cztM0_level2.fits modeM0/AS1A13_074T06_9000006284_46923cztM0_level2_quad_clean.evt
Size (bytes)510,131,52097,280,640
Size486.5 MB 92.8 MB
Events in quadrant A5,643,027662,592
Events in quadrant B6,074,549646,532
Events in quadrant C2,671,787645,452
Events in quadrant D4,043,553584,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206181
B0222061
C0122261
D0161911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58162163.713893%
B58175048.664260%
C5817621.065841%
D58172915.002579%

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 6971 5816 17 17 0.24% 0.29%
B 6972 5817 223 223 3.20% 3.83%
C 6972 5818 20 20 0.29% 0.34%
D 6972 5817 216 216 3.10% 3.71%

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 10 83 2996528 21502.01 672 659 139.3
A 13 248 28084 196.84 672 659 139.3
A 7 3 11893 80.63 672 659 139.3
B 3 112 3166544 24732.16 651 631 128.0
B 15 36 99215 770.14 651 631 128.0
B 0 198 97084 753.49 651 631 128.0
C 14 254 116229 745.8 651 655 155.0
C 1 3 6498 37.7 651 655 155.0
C 3 233 5733 32.77 651 655 155.0
D 1 52 431196 2657.1 648 629 162.0
D 13 249 426224 2626.42 648 629 162.0
D 2 249 187675 1154.29 648 629 162.0

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