ASTROSAT CZTI

Data Quality Report

Orbit 26753

Creation date: 2024-06-27T19:32:27.672888
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/AS1T03_223T01_9000003850_26753cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26753cztM0_level2_quad_clean.evt
Size (bytes)878,472,00072,115,200
Size837.8 MB 68.8 MB
Events in quadrant A4,587,455454,911
Events in quadrant B9,930,590346,886
Events in quadrant C3,615,066450,407
Events in quadrant D7,988,758432,546

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181930
B0341690
C0151470
D0287170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71571702.375297%
B7157296041.358111%
C71581792.500699%
D7158125317.504890%

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 7602 7158 29 29 0.38% 0.41%
B 7601 7156 2646 2646 34.81% 36.98%
C 7603 7159 12 12 0.16% 0.17%
D 7603 7159 923 923 12.14% 12.89%

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 0 13 1125086 6264.91 895 877 179.4
A 13 254 10991 56.36 895 877 179.4
A 3 137 8625 43.18 895 877 179.4
B 0 189 7412512 60564.44 640 623 122.4
B 12 111 14435 112.86 640 623 122.4
B 11 111 13032 101.4 640 623 122.4
C 14 238 135550 675.36 850 854 199.4
C 2 16 95236 473.22 850 854 199.4
C 10 22 51804 255.46 850 854 199.4
D 7 80 3490469 16888.69 804 786 206.6
D 1 52 937234 4532.04 804 786 206.6
D 12 227 207075 998.36 804 786 206.6

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