ASTROSAT CZTI

Data Quality Report

Orbit 36417

Creation date: 2022-06-23T15:29:36.090387
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/AS1T04_084T01_9000005198_36417cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36417cztM0_level2_quad_clean.evt
Size (bytes)437,584,32062,570,880
Size417.3 MB 59.7 MB
Events in quadrant A2,686,169388,077
Events in quadrant B3,821,123382,514
Events in quadrant C2,911,258380,769
Events in quadrant D3,463,904362,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111792
B0148561
C0117401
D0139151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A544050.091912%
B54402644.852941%
C5440591.084559%
D54401622.977941%

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 7173 5441 0 0 0.00% 0.00%
B 7173 5441 191 191 2.66% 3.51%
C 7173 5441 46 46 0.64% 0.85%
D 7173 5441 134 134 1.87% 2.46%

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 155064 1184.32 645 635 130.4
A 15 223 34156 257.07 645 635 130.4
A 13 254 9365 66.95 645 635 130.4
B 5 172 455991 3736.58 623 606 121.9
B 5 236 233897 1914.23 623 606 121.9
B 4 232 233598 1911.78 623 606 121.9
C 0 10 272712 1893.37 617 620 143.7
C 15 214 231478 1606.44 617 620 143.7
C 13 61 4247 25.24 617 620 143.7
D 2 249 521904 3468.8 619 602 150.3
D 12 6 129097 855.02 619 602 150.3
D 13 171 109177 722.47 619 602 150.3

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