ASTROSAT CZTI

Data Quality Report

Orbit 22885

Creation date: 2024-06-27T18:47:04.130589
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/AS1A08_009T01_9000003382_22885cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22885cztM0_level2_quad_clean.evt
Size (bytes)410,348,16090,708,480
Size391.3 MB 86.5 MB
Events in quadrant A2,772,202604,294
Events in quadrant B2,951,749608,904
Events in quadrant C2,737,083574,099
Events in quadrant D3,577,365559,691

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117121
B0122331
C0117271
D0142231

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5721400.699178%
B5721701.223562%
C5721420.734137%
D57221412.464173%

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 7016 5722 0 0 0.00% 0.00%
B 7016 5722 15 15 0.21% 0.26%
C 7016 5722 0 0 0.00% 0.00%
D 7017 5723 104 104 1.48% 1.82%

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 8432 53.43 719 705 144.6
A 0 226 6232 38.22 719 705 144.6
A 3 137 5938 36.19 719 705 144.6
B 3 64 161043 1208.63 708 692 132.7
B 0 190 20760 151.26 708 692 132.7
B 12 111 15480 111.46 708 692 132.7
C 14 238 110287 712.86 672 677 153.8
C 13 61 4756 26.53 672 677 153.8
C 0 10 3018 15.23 672 677 153.8
D 7 238 233088 1398.99 682 664 166.1
D 12 233 215046 1290.39 682 664 166.1
D 1 52 202185 1212.98 682 664 166.1

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