ASTROSAT CZTI

Data Quality Report

Orbit 36009

Creation date: 2022-08-09T18:10:03.858089
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/AS1T04_069T01_9000005158_36009cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36009cztM0_level2_quad_clean.evt
Size (bytes)794,200,320114,238,080
Size757.4 MB 108.9 MB
Events in quadrant A4,801,758723,384
Events in quadrant B6,509,660680,057
Events in quadrant C5,147,327691,979
Events in quadrant D6,905,708659,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209223
B0259042
C0216992
D0272982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10168210.206530%
B101685965.861526%
C10168630.619591%
D101682902.852085%

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 13153 10170 4 4 0.03% 0.04%
B 13153 10170 471 471 3.58% 4.63%
C 13153 10170 37 37 0.28% 0.36%
D 13153 10170 302 302 2.30% 2.97%

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 247334 1038.5 1166 1142 237.1
A 7 191 22694 90.91 1166 1142 237.1
A 13 254 16417 64.43 1166 1142 237.1
B 5 172 1475513 6776.77 1133 1100 217.6
B 4 171 182821 835.23 1133 1100 217.6
B 0 213 114648 521.89 1133 1100 217.6
C 15 214 415857 1574.3 1127 1134 263.4
C 9 187 166458 627.57 1127 1134 263.4
C 0 10 156923 591.38 1127 1134 263.4
D 12 227 1380069 5083.62 1118 1085 271.3
D 12 235 469310 1726.11 1118 1085 271.3
D 10 118 238503 875.24 1118 1085 271.3

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