ASTROSAT CZTI

Data Quality Report

Orbit 20180219_G08_035T01_9000001904_level2

Creation date: 2018-07-07T19:43:26.802740
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/AS1G08_035T01_9000001904cztM0_level2_bc.evt modeM0/AS1G08_035T01_9000001904cztM0_level2_quad_clean.evt
Size (bytes)790,038,720244,944,000
Size753.4 MB 233.6 MB
Events in quadrant A5,013,6661,533,944
Events in quadrant B6,599,1031,470,866
Events in quadrant C4,084,0371,544,566
Events in quadrant D6,848,6591,480,254

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0473840
B0552680
C0425920
D0501220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04100
B04100
C04100
D04100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A201528994.461096%
B20152252412.524811%
C201524292.128821%
D201526133.041882%

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 21323 20153 2 2 0.01% 0.01%
B 21323 20093 87 87 0.41% 0.43%
C 21323 20153 7 7 0.03% 0.03%
D 21323 20152 75 75 0.35% 0.37%

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 12 189 509550 2290.89 995 968 222.0
A 15 223 236119 1059.23 995 968 222.0
A 1 162 198823 891.23 995 968 222.0
B 4 239 1400737 7460.61 947 918 187.6
B 3 64 1216049 6476.28 947 918 187.6
B 0 85 110339 583.18 947 918 187.6
C 7 238 147201 662.2 992 974 220.8
C 14 234 20525 88.54 992 974 220.8
C 0 207 11762 48.85 992 974 220.8
D 8 195 2277734 9653.39 996 956 235.9
D 1 52 536951 2272.58 996 956 235.9
D 2 234 82784 346.95 996 956 235.9

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