ASTROSAT CZTI

Data Quality Report

Orbit 28489

Creation date: 2024-06-27T19:52:21.325373
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/AS1A10_110T04_9000004094_28489cztM0_level2.evt modeM0/AS1A10_110T04_9000004094_28489cztM0_level2_quad_clean.evt
Size (bytes)691,499,520104,702,400
Size659.5 MB 99.9 MB
Events in quadrant A3,380,259697,626
Events in quadrant B6,434,246680,087
Events in quadrant C3,443,508690,347
Events in quadrant D7,228,202632,491

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143992
B0236472
C0144462
D0261462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6746721.067299%
B6747109316.199793%
C67471522.252853%
D674789113.205869%

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 7691 6746 2 2 0.03% 0.03%
B 7692 6747 711 711 9.24% 10.54%
C 7692 6748 0 0 0.00% 0.00%
D 7691 6747 969 969 12.60% 14.36%

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 15 174 62565 359.16 857 839 171.9
A 13 254 11914 64.44 857 839 171.9
A 8 192 8893 46.86 857 839 171.9
B 10 245 3168666 20411.49 816 796 155.2
B 0 230 38024 239.87 816 796 155.2
B 12 111 18691 115.3 816 796 155.2
C 14 238 136227 694.48 839 845 194.9
C 3 233 24927 123.54 839 845 194.9
C 0 10 6431 28.65 839 845 194.9
D 1 52 1863688 9656.76 804 783 192.9
D 8 195 1766641 9153.7 804 783 192.9
D 12 233 236155 1220.1 804 783 192.9

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