ASTROSAT CZTI

Data Quality Report

Orbit 09765

Creation date: 2024-06-27T15:50:23.253557
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/AS1A03_080T01_9000001392_09765cztM0_level2.evt modeM0/AS1A03_080T01_9000001392_09765cztM0_level2_quad_clean.evt
Size (bytes)434,566,08092,344,320
Size414.4 MB 88.1 MB
Events in quadrant A3,107,007586,281
Events in quadrant B3,355,268590,127
Events in quadrant C2,972,842586,877
Events in quadrant D3,269,645565,873

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01392665
B01466875
C01368571
D01449573

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01382
B01380
C01382
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6712410.610846%
B6708831.237329%
C6709140.208675%
D6714260.387251%

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 8682 6742 6 6 0.07% 0.09%
B 8682 6738 17 17 0.20% 0.25%
C 8682 6744 1 1 0.01% 0.01%
D 8682 6742 10 10 0.12% 0.15%

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 15 174 40650 250.37 781 764 159.3
A 13 248 39579 243.64 781 764 159.3
A 8 15 16990 101.85 781 764 159.3
B 4 239 131004 859.71 787 768 151.5
B 0 214 64670 421.83 787 768 151.5
B 10 245 56817 369.99 787 768 151.5
C 13 61 5736 28.28 758 761 175.9
C 14 234 4699 22.39 758 761 175.9
C 10 22 3522 15.7 758 761 175.9
D 7 46 154881 822.94 750 729 187.3
D 1 52 133303 707.74 750 729 187.3
D 2 152 37409 195.81 750 729 187.3

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