ASTROSAT CZTI

Data Quality Report

Orbit 20151210_P01_180T10_9000000208_level2

Creation date: 2016-09-06T17:56:46.202485
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/AS1P01_180T10_9000000208cztM0_level2_bc.evt modeM0/AS1P01_180T10_9000000208cztM0_level2_quad_clean.evt
Size (bytes)138,081,60063,861,120
Size131.7 MB 60.9 MB
Events in quadrant A727,791427,311
Events in quadrant B927,176423,411
Events in quadrant C961,968405,082
Events in quadrant D1,279,207390,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170650
B0180940
C0173500
D0186530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4072481.178782%
B4072741.817289%
C4072421.031434%
D40722325.697446%

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 4071 4071 0 0 0.00% 0.00%
B 4071 4071 6 6 0.15% 0.15%
C 4071 4071 0 0 0.00% 0.00%
D 4071 4071 14 14 0.34% 0.34%

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 13 9 3228 73.77 187 183 41.3
A 12 243 1499 31.88 187 183 41.3
A 13 235 1022 20.33 187 183 41.3
B 15 22 48972 1370.47 188 184 35.6
B 14 53 30130 841.19 188 184 35.6
B 5 191 25974 724.45 188 184 35.6
C 15 241 187120 4774.03 178 175 39.2
C 3 79 24343 617.18 178 175 39.2
C 9 54 16443 415.44 178 175 39.2
D 2 16 266651 6639.37 176 170 40.1
D 13 73 200720 4996.7 176 170 40.1
D 12 22 63275 1572.26 176 170 40.1

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