ASTROSAT CZTI

Data Quality Report

Orbit 34963

Creation date: 2022-03-17T12:12:53.852435
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/AS1A11_047T09_9000005010_34963cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34963cztM0_level2_quad_clean.evt
Size (bytes)474,577,92058,072,320
Size452.6 MB 55.4 MB
Events in quadrant A2,868,690346,500
Events in quadrant B3,445,100346,407
Events in quadrant C2,976,428343,908
Events in quadrant D4,684,275311,327

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123683
B0140342
C0122712
D0179552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5862120.204708%
B58621973.360628%
C5862250.426476%
D58624698.000682%

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 7175 5863 4 4 0.06% 0.07%
B 7175 5863 139 139 1.94% 2.37%
C 7175 5863 14 14 0.20% 0.24%
D 7175 5863 449 449 6.26% 7.66%

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 7 16 97167 704.75 676 663 136.9
A 10 83 73202 529.74 676 663 136.9
A 15 223 46931 337.89 676 663 136.9
B 5 172 698778 5380.25 666 649 129.8
B 0 190 105273 806.3 666 649 129.8
B 12 111 16344 120.96 666 649 129.8
C 15 214 247523 1601.63 659 665 154.1
C 0 10 109101 703.54 659 665 154.1
C 0 207 31703 201.38 659 665 154.1
D 10 118 1085541 6926.08 633 615 156.6
D 8 195 593773 3786.67 633 615 156.6
D 13 249 213027 1356.02 633 615 156.6

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