ASTROSAT CZTI

Data Quality Report

Orbit 20190110_T03_070T09_9000002648_level2

Creation date: 2019-01-11T11:31:16.419078
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/AS1T03_070T09_9000002648cztM0_level2_bc.evt modeM0/AS1T03_070T09_9000002648cztM0_level2_quad_clean.evt
Size (bytes)647,208,000229,559,040
Size617.2 MB 218.9 MB
Events in quadrant A3,827,0301,438,318
Events in quadrant B4,411,0291,457,055
Events in quadrant C4,986,1951,363,411
Events in quadrant D5,064,5121,374,524

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391850
B0409840
C0437190
D0434110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191441640.856665%
B191442671.394693%
C191448204.283326%
D191444932.575219%

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 22149 19143 1 1 0.00% 0.01%
B 22149 19144 3 3 0.01% 0.02%
C 22149 19143 55 55 0.25% 0.29%
D 22149 19144 144 144 0.65% 0.75%

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 15 174 14216 61.5 989 971 215.4
A 4 2 11509 48.93 989 971 215.4
A 12 194 6454 25.46 989 971 215.4
B 0 219 128063 667.97 1005 982 190.2
B 10 245 124043 646.84 1005 982 190.2
B 7 220 109814 572.05 1005 982 190.2
C 4 254 1101177 4923.82 946 940 223.5
C 5 218 154607 687.7 946 940 223.5
C 3 233 39905 174.38 946 940 223.5
D 7 238 998466 4388.05 962 934 227.3
D 10 70 149637 654.13 962 934 227.3
D 2 152 95792 417.27 962 934 227.3

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