ASTROSAT CZTI

Data Quality Report

Orbit 34945

Creation date: 2022-03-16T06:44:11.189448
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/AS1A11_047T09_9000005010_34945cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34945cztM0_level2_quad_clean.evt
Size (bytes)458,562,24032,437,440
Size437.3 MB 30.9 MB
Events in quadrant A6,515,709116,789
Events in quadrant B2,247,607204,778
Events in quadrant C2,117,088202,925
Events in quadrant D2,750,601190,061

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218822
B090151
C085301
D0107191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3768233461.942675%
B37681283.397028%
C3768401.061571%
D37681082.866242%

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 5892 3768 2200 2200 37.34% 58.39%
B 5892 3769 101 101 1.71% 2.68%
C 5892 3769 37 37 0.63% 0.98%
D 5892 3769 102 102 1.73% 2.71%

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 15 169 5378564 91707.5 284 278 58.6
A 10 83 17921 300.84 284 278 58.6
A 13 6 10053 166.68 284 278 58.6
B 5 172 495944 5840.72 435 424 84.8
B 4 232 16775 192.73 435 424 84.8
B 12 111 10425 117.88 435 424 84.8
C 15 214 155542 1565.36 427 430 99.1
C 0 10 148867 1497.99 427 430 99.1
C 12 250 114222 1148.36 427 430 99.1
D 8 195 437437 4224.46 420 410 103.5
D 1 47 240168 2317.59 420 410 103.5
D 13 249 238420 2300.69 420 410 103.5

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