ASTROSAT CZTI

Data Quality Report

Orbit 24342

Creation date: 2024-06-27T19:04:58.272301
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/AS1A07_145T01_9000003594_24342cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24342cztM0_level2_quad_clean.evt
Size (bytes)599,748,48089,406,720
Size572.0 MB 85.3 MB
Events in quadrant A3,375,091567,646
Events in quadrant B3,439,212580,389
Events in quadrant C4,606,622557,320
Events in quadrant D6,283,850529,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144992
B0146712
C0183182
D0234095

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6782921.356532%
B67831021.503759%
C67832473.641457%
D67825427.991743%

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 8731 6783 1 1 0.01% 0.01%
B 8733 6785 0 0 0.00% 0.00%
C 8733 6785 0 0 0.00% 0.00%
D 8732 6784 366 366 4.19% 5.40%

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 13 254 10047 52.11 873 854 176.4
A 2 79 8065 40.88 873 854 176.4
A 3 137 7741 39.04 873 854 176.4
B 12 111 19921 114.48 874 852 166.6
B 11 111 17911 102.41 874 852 166.6
B 14 111 15832 89.93 874 852 166.6
C 7 247 1139967 5817.73 846 852 195.8
C 14 238 132445 672.08 846 852 195.8
C 2 16 33596 167.23 846 852 195.8
D 7 238 1220459 5939.89 839 814 205.3
D 8 195 932972 4539.78 839 814 205.3
D 1 52 746337 3630.83 839 814 205.3

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