ASTROSAT CZTI

Data Quality Report

Orbit 35003

Creation date: 2022-06-11T10:28:30.657111
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/AS1T05_010T01_9000005016_35003cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35003cztM0_level2_quad_clean.evt
Size (bytes)382,743,36095,990,400
Size365.0 MB 91.5 MB
Events in quadrant A2,447,383650,397
Events in quadrant B2,550,689667,310
Events in quadrant C2,690,554643,865
Events in quadrant D3,567,439599,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102993
B0105182
C0106492
D0139152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4935180.364742%
B4935330.668693%
C4935511.033435%
D49351012.046606%

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 7058 4936 13 13 0.18% 0.26%
B 7058 4936 10 10 0.14% 0.20%
C 7058 4936 40 40 0.57% 0.81%
D 7058 4936 91 91 1.29% 1.84%

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 71429 584.19 601 592 121.3
A 15 169 45628 371.41 601 592 121.3
A 13 254 7383 56.01 601 592 121.3
B 5 172 60401 520.83 603 591 114.8
B 0 190 37826 324.24 603 591 114.8
B 5 255 27773 236.7 603 591 114.8
C 15 214 207718 1514.91 588 593 136.7
C 0 10 160426 1169.02 588 593 136.7
C 14 67 20141 142.97 588 593 136.7
D 8 195 697214 4946.36 578 565 140.8
D 2 250 199731 1414.12 578 565 140.8
D 5 223 110927 783.59 578 565 140.8

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