ASTROSAT CZTI

Data Quality Report

Orbit 34556

Creation date: 2022-02-18T00:41:34.361532
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/AS1A05_103T05_9000004938_34556cztM0_level2.evt modeM0/AS1A05_103T05_9000004938_34556cztM0_level2_quad_clean.evt
Size (bytes)923,523,840116,763,840
Size880.7 MB 111.4 MB
Events in quadrant A4,784,670745,121
Events in quadrant B6,403,007719,985
Events in quadrant C5,011,711731,366
Events in quadrant D11,122,034673,328

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202614
B0249003
C0203213
D0399703

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9615600.624025%
B96154915.106604%
C9615320.332813%
D96158749.089964%

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 19651 9617 30 30 0.15% 0.31%
B 19651 9617 332 332 1.69% 3.45%
C 19651 9617 20 20 0.10% 0.21%
D 19651 9617 766 766 3.90% 7.97%

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 184477 794.21 1157 1137 230.8
A 10 83 69568 296.44 1157 1137 230.8
A 0 31 35824 150.26 1157 1137 230.8
B 5 172 1234413 5856.58 1125 1098 210.6
B 0 229 271089 1282.09 1125 1098 210.6
B 15 201 87952 412.44 1125 1098 210.6
C 15 214 404259 1574.6 1119 1130 256.0
C 0 10 121889 471.68 1119 1130 256.0
C 14 67 90060 347.35 1119 1130 256.0
D 8 195 3804086 13741.19 1086 1061 276.8
D 1 47 642859 2318.96 1086 1061 276.8
D 7 38 622802 2246.49 1086 1061 276.8

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