ASTROSAT CZTI

Data Quality Report

Orbit 20181028_A05_101T09_9000002466_level2

Creation date: 2018-10-30T09:52:02.383107
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/AS1A05_101T09_9000002466cztM0_level2_bc.evt modeM0/AS1A05_101T09_9000002466cztM0_level2_quad_clean.evt
Size (bytes)959,155,200355,106,880
Size914.7 MB 338.7 MB
Events in quadrant A6,859,7272,364,134
Events in quadrant B4,712,9712,459,252
Events in quadrant C3,800,3722,361,720
Events in quadrant D12,338,0942,222,397

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0508110
B0428520
C0400190
D0696220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1957811956.103790%
B195783081.573194%
C195782201.123710%
D1957815607.968127%

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 20994 19578 230 230 1.10% 1.17%
B 20994 19579 3 3 0.01% 0.02%
C 20994 19579 0 0 0.00% 0.00%
D 20994 19578 161 161 0.77% 0.82%

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 2981748 14079.91 955 936 211.7
A 9 143 110412 517.11 955 936 211.7
A 12 96 61311 285.18 955 936 211.7
B 15 35 329842 1712.64 985 961 192.0
B 0 229 226148 1172.65 985 961 192.0
B 0 189 72329 371.65 985 961 192.0
C 3 233 107607 478.12 939 932 223.1
C 7 247 64908 286.74 939 932 223.1
C 8 128 11182 45.94 939 932 223.1
D 2 16 5461680 24856.69 932 898 219.7
D 1 52 2608527 11869.55 932 898 219.7
D 10 70 297311 1349.23 932 898 219.7

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