ASTROSAT CZTI

Data Quality Report

Orbit 20161019_A02_149T01_9000000740_level2

Creation date: 2018-05-17T18:39:49.744304
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/AS1A02_149T01_9000000740cztM0_level2.evt modeM0/AS1A02_149T01_9000000740cztM0_level2_quad_clean.evt
Size (bytes)9,796,896,0001,712,871,360
Size9.1 GB 1.6 GB
Events in quadrant A69,189,99410,495,154
Events in quadrant B74,468,02110,646,603
Events in quadrant C67,214,47910,668,908
Events in quadrant D75,984,64710,077,741

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03048910
B03143780
C03007670
D03248630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029660
B029680
C029600
D029620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14587427361.875591%
B14583226081.788359%
C14588312670.868504%
D14585227631.894386%

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 167592 146250 460 460 0.27% 0.31%
B 167592 146241 148 148 0.09% 0.10%
C 167592 146246 6 6 0.00% 0.00%
D 167592 146238 1063 1063 0.63% 0.73%

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 15 236 1228568 335.97 17582 17181 3605.6
A 0 50 261875 67.86 17582 17181 3605.6
A 12 194 171383 42.77 17582 17181 3605.6
B 15 204 2065680 610.08 17737 17316 3357.5
B 11 51 707656 205.61 17737 17316 3357.5
B 4 81 592433 171.29 17737 17316 3357.5
C 9 16 234347 54.9 17101 17180 3955.7
C 14 67 138836 30.75 17101 17180 3955.7
C 13 61 137182 30.34 17101 17180 3955.7
D 4 95 3530588 844.92 17039 16541 4159.0
D 8 195 1187440 281.53 17039 16541 4159.0
D 1 20 1018481 240.91 17039 16541 4159.0

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