ASTROSAT CZTI

Data Quality Report

Orbit 35970

Creation date: 2022-05-25T13:26:52.006313
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/AS1T05_009T07_9000005152_35970cztM0_level2.evt modeM0/AS1T05_009T07_9000005152_35970cztM0_level2_quad_clean.evt
Size (bytes)135,074,88017,879,040
Size128.8 MB 17.1 MB
Events in quadrant A493,856137,680
Events in quadrant B2,218,25070,610
Events in quadrant C618,655133,612
Events in quadrant D696,200128,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020002
B071951
C023771
D026541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89840.445434%
B898898100.000000%
C898384.231626%
D898394.342984%

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 898 898 1 1 0.11% 0.11%
B 898 898 842 842 93.76% 93.76%
C 898 898 29 29 3.23% 3.23%
D 898 898 43 43 4.79% 4.79%

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 10 83 56262 2293.1 112 110 24.5
A 8 144 1942 74.81 112 110 24.5
A 10 67 1528 57.91 112 110 24.5
B 5 31 836159 60709.16 62 60 13.8
B 5 15 782768 56832.43 62 60 13.8
B 5 14 302244 21941.58 62 60 13.8
C 0 10 112393 4366.75 104 105 25.7
C 15 214 41315 1602.61 104 105 25.7
C 9 187 28440 1101.92 104 105 25.7
D 7 223 187822 7027.75 104 101 26.7
D 2 250 77995 2916.13 104 101 26.7
D 13 249 20852 776.86 104 101 26.7

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