ASTROSAT CZTI

Data Quality Report

Orbit 20220524_T05_009T08_9000005150_level2

Creation date: 2022-05-26T17:00:04.825498
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1T05_009T08_9000005150cztM0_level2_bc.evt modeM0/AS1T05_009T08_9000005150cztM0_level2_quad_clean.evt
Size (bytes)497,016,000158,443,200
Size474.0 MB 151.1 MB
Events in quadrant A2,266,6961,269,711
Events in quadrant B4,682,900446,717
Events in quadrant C3,120,8461,230,345
Events in quadrant D4,303,2021,171,268

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01980
B01980
C01980
D01980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200130
B0820560
C0239000
D0279630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9761140.143428%
B9761964798.832087%
C97614104.200389%
D97614404.507735%

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 13346 9763 0 0 0.00% 0.00%
B 13345 9758 117 117 0.88% 1.20%
C 13346 9761 13 13 0.10% 0.13%
D 13346 9761 73 73 0.55% 0.75%

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 10 83 232765 2026.04 508 499 114.6
A 8 144 29963 257.01 508 499 114.6
A 15 169 24636 210.55 508 499 114.6
B 5 31 2019158 44236.56 174 174 45.6
B 5 15 1750367 38347.26 174 174 45.6
B 0 190 92801 2029.49 174 174 45.6
C 9 187 666147 5833.06 485 480 114.1
C 15 214 375582 3286.92 485 480 114.1
C 0 10 86054 749.86 485 480 114.1
D 2 250 536854 4514.3 489 472 118.8
D 12 227 438737 3688.52 489 472 118.8
D 12 17 335698 2821.33 489 472 118.8

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