ASTROSAT CZTI

Data Quality Report

Orbit 23146

Creation date: 2024-06-27T18:50:28.107313
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_173T01_9000003416_23146cztM0_level2.evt modeM0/AS1T03_173T01_9000003416_23146cztM0_level2_quad_clean.evt
Size (bytes)50,621,76012,948,480
Size48.3 MB 12.3 MB
Events in quadrant A307,38590,718
Events in quadrant B322,23194,940
Events in quadrant C456,76178,887
Events in quadrant D409,55584,469

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012621
B013471
C017721
D015891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49710.201207%
B49761.207243%
C4977615.291751%
D497336.639839%

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 497 497 0 0 0.00% 0.00%
B 497 497 0 0 0.00% 0.00%
C 497 497 54 54 10.87% 10.87%
D 497 497 11 11 2.21% 2.21%

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 13 254 848 42.73 79 77 18.0
A 0 226 744 36.96 79 77 18.0
A 3 137 626 30.43 79 77 18.0
B 3 209 2781 154.69 81 79 17.5
B 0 190 2248 124.18 81 79 17.5
B 0 228 2207 121.83 81 79 17.5
C 0 10 145982 7857.48 70 70 18.6
C 8 208 22964 1232.84 70 70 18.6
C 14 238 10798 577.69 70 70 18.6
D 12 233 69093 3340.15 78 75 20.7
D 1 239 17820 858.77 78 75 20.7
D 2 153 9401 451.33 78 75 20.7

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