ASTROSAT CZTI

Data Quality Report

Orbit 11472

Creation date: 2024-06-27T16:13:26.158841
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/AS1A04_021T04_9000001682_11472cztM0_level2.evt modeM0/AS1A04_021T04_9000001682_11472cztM0_level2_quad_clean.evt
Size (bytes)612,624,96069,468,480
Size584.2 MB 66.3 MB
Events in quadrant A5,051,951387,897
Events in quadrant B5,892,615384,210
Events in quadrant C3,196,067432,652
Events in quadrant D3,931,799403,891

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198483
B0222572
C0144082
D0165382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71006479.112676%
B710077210.873239%
C7100320.450704%
D7101791.112519%

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 7931 7102 368 368 4.64% 5.18%
B 7931 7102 432 432 5.45% 6.08%
C 7931 7102 0 0 0.00% 0.00%
D 7932 7103 41 41 0.52% 0.58%

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 1749697 10569.1 797 778 165.5
A 1 162 66919 399.7 797 778 165.5
A 1 178 38210 226.21 797 778 165.5
B 4 81 1379083 8948.4 801 779 154.0
B 4 239 1067171 6923.37 801 779 154.0
B 3 64 138667 895.21 801 779 154.0
C 13 61 5873 26.39 818 823 191.4
C 14 234 5829 26.16 818 823 191.4
C 1 3 2197 7.18 818 823 191.4
D 1 52 281027 1453.79 804 783 192.8
D 5 222 164964 851.71 804 783 192.8
D 2 120 112125 577.6 804 783 192.8

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