ASTROSAT CZTI

Data Quality Report

Orbit 29531

Creation date: 2024-06-27T20:05:07.402682
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/AS1A10_073T07_9000004254_29531cztM0_level2.evt modeM0/AS1A10_073T07_9000004254_29531cztM0_level2_quad_clean.evt
Size (bytes)661,913,28079,606,080
Size631.2 MB 75.9 MB
Events in quadrant A2,955,705514,409
Events in quadrant B2,995,233531,612
Events in quadrant C3,180,512511,228
Events in quadrant D10,516,361440,780

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123851
B0125001
C0128911
D0353411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5905881.490262%
B59051031.744285%
C59052183.691787%
D5905174829.602032%

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 6910 5906 0 0 0.00% 0.00%
B 6910 5906 4 4 0.06% 0.07%
C 6910 5906 1 1 0.01% 0.02%
D 6910 5906 1914 1914 27.70% 32.41%

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 11 29 22307 139.52 759 743 154.6
A 13 254 11142 67.28 759 743 154.6
A 3 137 7168 41.57 759 743 154.6
B 0 190 20970 140.39 751 734 144.1
B 12 111 17503 116.34 751 734 144.1
B 11 111 16144 106.91 751 734 144.1
C 14 238 141815 822.64 732 740 171.5
C 3 233 122701 711.18 732 740 171.5
C 14 254 40571 232.26 732 740 171.5
D 8 195 6824137 42172.71 688 673 161.8
D 7 238 908846 5613.0 688 673 161.8
D 7 223 85621 525.02 688 673 161.8

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