ASTROSAT CZTI

Data Quality Report

Orbit 08988

Creation date: 2024-06-27T15:39:44.716145
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_025T08_9000001248_08988cztM0_level2.evt modeM0/AS1A03_025T08_9000001248_08988cztM0_level2_quad_clean.evt
Size (bytes)478,800,00068,829,120
Size456.6 MB 65.6 MB
Events in quadrant A4,021,599414,038
Events in quadrant B3,664,945427,216
Events in quadrant C3,137,939412,271
Events in quadrant D3,258,919401,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01577128
B01466014
C01306523
D0134569

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61472293.725395%
B61502193.560976%
C6145801.301871%
D6152801.300390%

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 7430 6155 86 86 1.16% 1.40%
B 7430 6155 67 67 0.90% 1.09%
C 7430 6156 7 7 0.09% 0.11%
D 7430 6155 7 7 0.09% 0.11%

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 8 5 833162 5067.37 822 809 164.3
A 15 174 21234 124.35 822 809 164.3
A 0 226 7685 41.86 822 809 164.3
B 10 16 445843 2882.96 820 805 154.4
B 12 32 24943 156.37 820 805 154.4
B 12 111 16730 103.16 820 805 154.4
C 4 254 46626 253.01 787 793 181.2
C 9 68 23039 122.8 787 793 181.2
C 13 61 6004 28.77 787 793 181.2
D 1 52 132202 689.7 788 772 190.6
D 7 71 38123 196.0 788 772 190.6
D 2 234 27204 138.71 788 772 190.6

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