ASTROSAT CZTI

Data Quality Report

Orbit 19234

Creation date: 2024-06-27T18:00:27.383685
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/AS1C04_001T01_9000002846_19234cztM0_level2.evt modeM0/AS1C04_001T01_9000002846_19234cztM0_level2_quad_clean.evt
Size (bytes)469,998,72097,934,400
Size448.2 MB 93.4 MB
Events in quadrant A3,197,125638,794
Events in quadrant B3,329,544646,718
Events in quadrant C3,790,215621,302
Events in quadrant D3,485,007615,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138132
B0142522
C0157272
D0147242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6366731.146717%
B6366981.539428%
C63661392.183475%
D63661051.649387%

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 7541 6366 1 1 0.01% 0.02%
B 7541 6366 10 10 0.13% 0.16%
C 7540 6365 5 5 0.07% 0.08%
D 7541 6366 28 28 0.37% 0.44%

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 9 143 21658 127.22 821 804 163.9
A 3 15 8443 46.6 821 804 163.9
A 13 254 8358 46.08 821 804 163.9
B 7 220 53118 340.19 817 797 153.8
B 4 80 19892 124.16 817 797 153.8
B 3 64 18085 112.41 817 797 153.8
C 3 233 510693 2798.5 793 798 182.2
C 14 238 125568 684.78 793 798 182.2
C 0 207 58188 314.98 793 798 182.2
D 1 52 230761 1191.96 806 784 192.9
D 11 176 125362 645.68 806 784 192.9
D 2 120 42543 216.43 806 784 192.9

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