ASTROSAT CZTI

Data Quality Report

Orbit 20210527_A10_071T05_9000004412_level2

Creation date: 2021-05-29T12:10:59.031654
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_071T05_9000004412cztM0_level2_bc.evt modeM0/AS1A10_071T05_9000004412cztM0_level2_quad_clean.evt
Size (bytes)3,571,914,240954,936,000
Size3.3 GB 910.7 MB
Events in quadrant A16,600,4256,252,344
Events in quadrant B34,799,6236,197,529
Events in quadrant C17,252,0905,888,941
Events in quadrant D34,737,9345,752,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01532780
B02157860
C01579340
D02117930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014360
B014360
C014360
D014360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7048311291.601805%
B7048315762.236000%
C7048323883.388051%
D7048316902.397741%

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 81274 70489 22 22 0.03% 0.03%
B 81274 70487 12 12 0.01% 0.02%
C 81274 70487 48 48 0.06% 0.07%
D 81274 70486 212 212 0.26% 0.30%

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 929382 1091.94 4011 3954 847.5
A 13 254 126351 144.42 4011 3954 847.5
A 8 192 111695 127.13 4011 3954 847.5
B 6 159 18751136 25038.62 3989 3903 748.7
B 0 229 247459 325.29 3989 3903 748.7
B 0 190 169134 220.68 3989 3903 748.7
C 9 54 1152748 1316.78 3754 3761 872.6
C 0 10 481945 548.02 3754 3761 872.6
C 15 208 376351 427.0 3754 3761 872.6
D 8 195 14230989 16281.84 3882 3774 873.8
D 1 52 2646249 3024.09 3882 3774 873.8
D 12 227 775012 882.62 3882 3774 873.8

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