ASTROSAT CZTI

Data Quality Report

Orbit 08834

Creation date: 2024-06-27T15:37:50.678798
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/AS1G07_087T01_9000001228_08834cztM0_level2.evt modeM0/AS1G07_087T01_9000001228_08834cztM0_level2_quad_clean.evt
Size (bytes)1,736,058,240303,488,640
Size1.6 GB 289.4 MB
Events in quadrant A14,393,8192,002,075
Events in quadrant B10,700,5442,053,247
Events in quadrant C9,703,9931,957,893
Events in quadrant D16,339,0061,709,627

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057398149
B046240105
C044202106
D063169137

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04400
B04400
C04400
D04400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A213158033.767300%
B213233481.632041%
C213231710.801951%
D21320224610.534709%

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 35712 21343 360 360 1.01% 1.69%
B 35712 21350 37 37 0.10% 0.17%
C 35712 21355 2 2 0.01% 0.01%
D 35711 21347 1993 1993 5.58% 9.34%

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 5 2669566 5190.99 2559 2512 513.8
A 15 223 1057199 2052.78 2559 2512 513.8
A 15 239 402284 778.09 2559 2512 513.8
B 10 16 310296 632.48 2594 2536 486.6
B 0 214 174653 353.72 2594 2536 486.6
B 5 255 66835 132.14 2594 2536 486.6
C 14 234 33899 55.54 2466 2474 565.8
C 13 61 19114 29.41 2466 2474 565.8
C 12 4 15260 22.6 2466 2474 565.8
D 2 16 5320816 9067.21 2267 2209 586.6
D 1 52 853648 1451.54 2267 2209 586.6
D 8 195 449486 762.52 2267 2209 586.6

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