ASTROSAT CZTI

Data Quality Report

Orbit 34362

Creation date: 2022-02-04T20:52:29.682157
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/AS1A05_019T01_9000004906_34362cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34362cztM0_level2_quad_clean.evt
Size (bytes)605,318,40086,224,320
Size577.3 MB 82.2 MB
Events in quadrant A2,649,002593,879
Events in quadrant B3,336,043589,756
Events in quadrant C4,212,111557,515
Events in quadrant D7,767,495488,797

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113502
B0134771
C0161821
D0268391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A544260.110254%
B5442881.617053%
C54421302.388828%
D5442125723.098126%

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 7295 5443 2 2 0.03% 0.04%
B 7295 5443 53 53 0.73% 0.97%
C 7295 5443 102 102 1.40% 1.87%
D 7295 5443 1292 1292 17.71% 23.74%

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 32909 245.06 668 656 131.6
A 13 6 19767 145.21 668 656 131.6
A 9 143 15167 110.25 668 656 131.6
B 5 172 298543 2374.58 656 640 125.5
B 0 190 239990 1907.86 656 640 125.5
B 5 200 99554 788.44 656 640 125.5
C 4 254 943321 6511.71 634 639 144.8
C 3 233 455029 3138.76 634 639 144.8
C 15 214 227508 1567.13 634 639 144.8
D 7 223 2123302 14321.92 609 593 148.2
D 1 52 2033632 13716.92 609 593 148.2
D 8 195 482086 3248.63 609 593 148.2

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