ASTROSAT CZTI

Data Quality Report

Orbit 20190120_A05_096T06_9000002668_level2

Creation date: 2019-01-21T12:11:12.473198
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_096T06_9000002668cztM0_level2_bc.evt modeM0/AS1A05_096T06_9000002668cztM0_level2_quad_clean.evt
Size (bytes)2,295,907,2001,145,327,040
Size2.1 GB 1.1 GB
Events in quadrant A13,899,4207,753,119
Events in quadrant B15,658,1767,925,933
Events in quadrant C12,851,0927,504,522
Events in quadrant D22,728,8787,090,633

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01364140
B01416730
C01335470
D01699460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013100
B013100
C013100
D013100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A644429171.422985%
B6444212922.004904%
C644429421.461780%
D6444242866.650942%

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 74672 64437 26 26 0.03% 0.04%
B 74672 64439 23 23 0.03% 0.04%
C 74672 64439 1 1 0.00% 0.00%
D 74672 64387 900 900 1.21% 1.40%

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 659680 898.87 3318 3259 730.3
A 4 2 370239 502.52 3318 3259 730.3
A 5 168 46464 59.16 3318 3259 730.3
B 15 222 1224780 1922.0 3367 3288 635.5
B 7 220 302919 471.47 3367 3288 635.5
B 0 189 255588 396.99 3367 3288 635.5
C 3 233 489274 650.95 3182 3167 746.8
C 9 54 40798 50.39 3182 3167 746.8
C 9 160 40571 50.09 3182 3167 746.8
D 7 238 5813907 7211.53 3121 3034 805.8
D 5 222 2688168 3332.36 3121 3034 805.8
D 2 165 654964 809.07 3121 3034 805.8

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