ASTROSAT CZTI

Data Quality Report

Orbit 20180722_A04_105T01_9000002248_level2

Creation date: 2018-07-24T11:21:47.193540
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/AS1A04_105T01_9000002248cztM0_level2_bc.evt modeM0/AS1A04_105T01_9000002248cztM0_level2_quad_clean.evt
Size (bytes)5,237,496,0001,208,900,160
Size4.9 GB 1.1 GB
Events in quadrant A62,116,2127,476,159
Events in quadrant B35,125,4107,646,738
Events in quadrant C31,872,0267,631,249
Events in quadrant D23,167,1127,463,116

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03254120
B02556500
C02436590
D02069780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019060
B019060
C019060
D019060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01530
B01530
C01530
D01530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A932921173812.582001%
B9329277228.277237%
C9329234063.650903%
D9329216631.782575%

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 108683 93286 4093 4093 3.77% 4.39%
B 108683 93278 987 987 0.91% 1.06%
C 108683 93286 58 58 0.05% 0.06%
D 108683 93285 196 196 0.18% 0.21%

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 0 253 42019768 40901.42 4684 4593 1027.2
A 12 189 1725247 1675.04 4684 4593 1027.2
A 9 143 187097 177.67 4684 4593 1027.2
B 3 112 12065228 13458.21 4729 4605 896.2
B 3 64 1529668 1701.79 4729 4605 896.2
B 10 16 637865 706.64 4729 4605 896.2
C 3 233 10416544 10184.96 4637 4577 1022.3
C 4 254 2655360 2592.99 4637 4577 1022.3
C 7 247 351972 339.82 4637 4577 1022.3
D 7 38 1066097 980.4 4721 4554 1082.8
D 2 16 703516 645.53 4721 4554 1082.8
D 1 255 606830 556.24 4721 4554 1082.8

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