ASTROSAT CZTI

Data Quality Report

Orbit 34512

Creation date: 2022-02-15T11:36:48.976411
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/AS1A05_103T05_9000004930_34512cztM0_level2.evt modeM0/AS1A05_103T05_9000004930_34512cztM0_level2_quad_clean.evt
Size (bytes)173,471,04024,488,640
Size165.4 MB 23.4 MB
Events in quadrant A1,015,939151,940
Events in quadrant B1,105,257152,791
Events in quadrant C1,185,380149,589
Events in quadrant D1,810,654143,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042072
B045101
C047101
D067151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1972170.862069%
B1972130.659229%
C1972301.521298%
D197228114.249493%

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 3825 1973 13 13 0.34% 0.66%
B 3825 1973 5 5 0.13% 0.25%
C 3825 1973 21 21 0.55% 1.06%
D 3825 1973 246 246 6.43% 12.47%

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 3 15 32916 658.0 238 233 49.7
A 15 17 22722 452.77 238 233 49.7
A 10 83 19509 388.08 238 233 49.7
B 5 172 62701 1330.61 236 230 46.9
B 5 63 37681 797.69 236 230 46.9
B 0 190 35492 751.07 236 230 46.9
C 0 10 103317 1875.97 233 234 54.9
C 15 214 85402 1549.94 233 234 54.9
C 14 67 77082 1398.53 233 234 54.9
D 13 249 576095 10086.32 208 204 57.1
D 8 195 138245 2417.69 208 204 57.1
D 12 17 111894 1956.17 208 204 57.1

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