ASTROSAT CZTI

Data Quality Report

Orbit 07081

Creation date: 2024-06-27T15:15:21.174492
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/AS1A02_090T01_9000000970_07081cztM0_level2.evt modeM0/AS1A02_090T01_9000000970_07081cztM0_level2_quad_clean.evt
Size (bytes)526,098,24095,307,840
Size501.7 MB 90.9 MB
Events in quadrant A4,024,932595,896
Events in quadrant B3,780,126609,690
Events in quadrant C3,392,567606,804
Events in quadrant D4,241,590567,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165583
B0157342
C0149552
D0175842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72752783.821306%
B72751792.460481%
C7275761.044674%
D72752553.505155%

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 7715 7276 126 126 1.63% 1.73%
B 7715 7276 5 5 0.06% 0.07%
C 7715 7276 0 0 0.00% 0.00%
D 7715 7276 158 158 2.05% 2.17%

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 15 593810 3235.39 889 870 183.3
A 0 226 8577 42.05 889 870 183.3
A 12 194 8090 39.4 889 870 183.3
B 0 219 161315 933.26 896 874 171.9
B 0 214 86743 499.49 896 874 171.9
B 4 48 49877 285.04 896 874 171.9
C 13 61 6844 29.46 867 874 202.7
C 1 3 3342 12.18 867 874 202.7
C 9 68 3112 11.04 867 874 202.7
D 1 20 330972 1543.2 862 836 213.9
D 13 169 197845 920.9 862 836 213.9
D 14 34 181448 844.26 862 836 213.9

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