ASTROSAT CZTI

Data Quality Report

Orbit 36096

Creation date: 2022-08-10T09:28:56.671886
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_36096cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36096cztM0_level2_quad_clean.evt
Size (bytes)551,681,28073,512,000
Size526.1 MB 70.1 MB
Events in quadrant A3,558,061443,136
Events in quadrant B3,884,405437,462
Events in quadrant C3,798,390423,644
Events in quadrant D4,968,457410,199

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152143
B0161342
C0158172
D0195802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7349140.190502%
B73491241.687304%
C7349470.639543%
D73493374.585658%

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 10334 7351 1 1 0.01% 0.01%
B 10334 7351 81 81 0.78% 1.10%
C 10334 7351 42 42 0.41% 0.57%
D 10334 7351 256 256 2.48% 3.48%

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 214309 1234.83 854 835 172.9
A 13 6 18532 102.37 854 835 172.9
A 15 223 18223 100.58 854 835 172.9
B 5 172 224958 1361.44 843 819 164.6
B 5 200 168218 1016.8 843 819 164.6
B 0 190 50821 303.72 843 819 164.6
C 15 214 326554 1692.45 823 825 192.5
C 0 10 211044 1092.28 823 825 192.5
C 15 159 26463 133.21 823 825 192.5
D 12 6 915348 4595.43 810 786 199.0
D 1 52 258366 1294.27 810 786 199.0
D 13 249 199633 999.15 810 786 199.0

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