ASTROSAT CZTI

Data Quality Report

Orbit 35786

Creation date: 2022-05-12T12:08:38.724587
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/AS1A09_121T01_9000005136_35786cztM0_level2.evt modeM0/AS1A09_121T01_9000005136_35786cztM0_level2_quad_clean.evt
Size (bytes)410,702,40056,188,800
Size391.7 MB 53.6 MB
Events in quadrant A2,839,302342,650
Events in quadrant B3,258,532346,341
Events in quadrant C2,865,189339,116
Events in quadrant D3,143,853330,832

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115712
B0128332
C0114132
D0125982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48741212.482561%
B48741803.693065%
C48741122.297907%
D48741092.236356%

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 6967 4875 111 111 1.59% 2.28%
B 6967 4875 138 138 1.98% 2.83%
C 6967 4875 101 101 1.45% 2.07%
D 6967 4875 113 113 1.62% 2.32%

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 15 237 432202 3769.0 564 553 114.5
A 10 83 163081 1419.13 564 553 114.5
A 7 48 32892 282.37 564 553 114.5
B 5 255 253193 2364.81 564 549 106.8
B 5 172 184939 1725.93 564 549 106.8
B 4 232 165503 1544.01 564 549 106.8
C 0 10 275730 2134.86 552 557 128.9
C 15 214 208364 1612.22 552 557 128.9
C 1 23 117910 910.46 552 557 128.9
D 10 118 254534 1914.32 552 539 132.7
D 2 249 138592 1040.48 552 539 132.7
D 8 195 118012 885.38 552 539 132.7

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