ASTROSAT CZTI

Data Quality Report

Orbit 20210221_A10_094T71_9000004196_level2

Creation date: 2021-02-22T10:31:26.962347
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_094T71_9000004196cztM0_level2_bc.evt modeM0/AS1A10_094T71_9000004196cztM0_level2_quad_clean.evt
Size (bytes)358,862,400105,367,680
Size342.2 MB 100.5 MB
Events in quadrant A1,167,261742,349
Events in quadrant B1,391,300749,786
Events in quadrant C5,128,656657,653
Events in quadrant D2,821,697677,250

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109160
B0118060
C0237810
D0166880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5191340.654980%
B5191721.387016%
C519193417.992680%
D51913136.029667%

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 6231 5191 0 0 0.00% 0.00%
B 6231 5191 3 3 0.05% 0.06%
C 6231 5192 77 77 1.24% 1.48%
D 6231 5191 40 40 0.64% 0.77%

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 0 13 13255 197.82 298 293 65.5
A 13 254 10014 148.36 298 293 65.5
A 0 226 1869 24.05 298 293 65.5
B 0 229 128671 2199.04 298 293 58.4
B 0 183 57402 978.24 298 293 58.4
B 10 245 35398 601.33 298 293 58.4
C 3 233 4068991 61670.05 269 267 66.0
C 14 254 17018 253.9 269 267 66.0
C 2 114 9759 143.87 269 267 66.0
D 1 52 913243 13537.62 284 274 67.4
D 8 195 749615 11111.32 284 274 67.4
D 2 250 39032 574.71 284 274 67.4

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