ASTROSAT CZTI

Data Quality Report

Orbit 30743

Creation date: 2024-06-27T20:19:06.906789
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_053T35_9000004438_30743cztM0_level2.evt modeM0/AS1A10_053T35_9000004438_30743cztM0_level2_quad_clean.evt
Size (bytes)543,738,240111,657,600
Size518.5 MB 106.5 MB
Events in quadrant A3,617,233737,230
Events in quadrant B5,399,882748,149
Events in quadrant C3,490,016735,471
Events in quadrant D3,533,044720,788

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148152
B0201042
C0143662
D0146042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63071432.267322%
B63061342.124960%
C63061021.617507%
D6306951.506502%

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 7547 6308 63 63 0.83% 1.00%
B 7546 6306 25 25 0.33% 0.40%
C 7546 6307 3 3 0.04% 0.05%
D 7546 6306 59 59 0.78% 0.94%

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 13 348533 2087.1 836 823 166.6
A 8 192 39306 230.99 836 823 166.6
A 13 254 11524 64.23 836 823 166.6
B 6 159 1818744 11501.92 836 816 158.1
B 15 33 184525 1162.32 836 816 158.1
B 5 255 65667 410.31 836 816 158.1
C 14 238 139773 719.32 826 835 193.2
C 3 233 65700 335.82 826 835 193.2
C 0 10 31800 160.31 826 835 193.2
D 12 227 189590 919.84 826 810 205.2
D 8 195 76960 371.05 826 810 205.2
D 2 250 44661 213.67 826 810 205.2

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