ASTROSAT CZTI

Data Quality Report

Orbit 20180826_T02_095T01_9000002330_level2

Creation date: 2018-08-28T17:31:14.831090
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/AS1T02_095T01_9000002330cztM0_level2_bc.evt modeM0/AS1T02_095T01_9000002330cztM0_level2_quad_clean.evt
Size (bytes)2,291,538,240636,920,640
Size2.1 GB 607.4 MB
Events in quadrant A26,602,0363,831,679
Events in quadrant B13,695,8154,145,938
Events in quadrant C9,792,1804,066,803
Events in quadrant D16,045,6023,959,436

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01612950
B01122470
C01007810
D01199740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09720
B09720
C09720
D09720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47877903918.879629%
B4787714573.043215%
C4787711182.335150%
D4787722604.720429%

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 53298 47879 2425 2425 4.55% 5.06%
B 53298 47882 47 47 0.09% 0.10%
C 53298 47882 6 6 0.01% 0.01%
D 53298 47879 512 512 0.96% 1.07%

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 15 239 17718219 34955.46 2263 2217 506.8
A 9 143 151138 293.84 2263 2217 506.8
A 13 210 18411 31.95 2263 2217 506.8
B 4 251 3469230 7371.25 2431 2363 470.3
B 4 216 132742 277.21 2431 2363 470.3
B 4 173 114730 238.91 2431 2363 470.3
C 3 233 288524 502.56 2371 2349 569.4
C 15 127 237706 413.32 2371 2349 569.4
C 9 54 88050 150.5 2371 2349 569.4
D 1 52 6265926 10648.36 2433 2341 588.2
D 2 234 200928 337.61 2433 2341 588.2
D 10 70 77367 127.55 2433 2341 588.2

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