ASTROSAT CZTI

Data Quality Report

Orbit 20160609_G05_152T03_9000000488_level2

Creation date: 2025-10-30T20:02:14.723016
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/AS1G05_152T03_9000000488cztM0_level2.fits modeM0/AS1G05_152T03_9000000488cztM0_level2_quad_clean.evt
Size (bytes)511,194,240538,142,400
Size487.5 MB 513.2 MB
Events in quadrant A3,063,0343,250,005
Events in quadrant B2,973,4083,243,224
Events in quadrant C3,026,8163,107,380
Events in quadrant D2,569,3662,851,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011460
B011460
C011460
D011460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01429400
B01402610
C01283810
D01418560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5605523084.117385%
B5605519563.489430%
C5605614382.565292%
D5605728315.050217%

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 65812 56039 0 0 0.00% 0.00%
B 65812 56045 0 0 0.00% 0.00%
C 65812 56047 0 0 0.00% 0.00%
D 65812 56020 0 0 0.00% 0.00%

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 0 29 2861 10.37 797 744 204.1
A 7 110 2638 9.28 797 744 204.1
A 9 19 2303 7.64 797 744 204.1
B 2 9 2545 11.34 786 747 158.5
B 12 226 2176 9.01 786 747 158.5
B 14 254 2082 8.42 786 747 158.5
C 1 80 2265 7.18 798 737 212.8
C 1 81 2156 6.67 798 737 212.8
C 9 188 2090 6.36 798 737 212.8
D 3 14 1923 6.35 735 667 197.9
D 7 5 1874 6.1 735 667 197.9
D 1 19 1862 6.04 735 667 197.9

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