ASTROSAT CZTI

Data Quality Report

Orbit 18338

Creation date: 2024-06-27T17:48:32.193801
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/AS1A06_006T01_9000002720_18338cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18338cztM0_level2_quad_clean.evt
Size (bytes)468,976,32063,305,280
Size447.3 MB 60.4 MB
Events in quadrant A3,192,733374,163
Events in quadrant B3,420,069381,889
Events in quadrant C3,255,716369,883
Events in quadrant D3,912,138356,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130371
B0137531
C0132211
D0158301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6224250.401671%
B6224691.108612%
C6224610.980077%
D6224691.108612%

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 7564 6225 0 0 0.00% 0.00%
B 7564 6225 26 26 0.34% 0.42%
C 7564 6225 0 0 0.00% 0.00%
D 7564 6225 43 43 0.57% 0.69%

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 4 2 14653 84.59 824 810 163.7
A 15 174 8727 48.38 824 810 163.7
A 0 226 7286 39.57 824 810 163.7
B 4 171 106429 672.02 832 814 157.2
B 7 220 41390 258.18 832 814 157.2
B 12 111 17214 104.35 832 814 157.2
C 14 238 126176 681.99 799 808 183.8
C 0 207 8252 40.49 799 808 183.8
C 13 61 5706 26.64 799 808 183.8
D 1 52 650423 3323.59 803 780 195.5
D 7 238 140681 715.74 803 780 195.5
D 7 223 36175 181.08 803 780 195.5

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