ASTROSAT CZTI

Data Quality Report

Orbit 27650

Creation date: 2024-06-27T19:42:35.754125
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_257T01_9000003976_27650cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27650cztM0_level2_quad_clean.evt
Size (bytes)663,900,48074,672,640
Size633.1 MB 71.2 MB
Events in quadrant A3,577,223465,147
Events in quadrant B4,280,355470,271
Events in quadrant C3,493,294453,702
Events in quadrant D8,271,878374,272

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152530
B0171830
C0147570
D0294120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71401361.904762%
B71413034.243103%
C71411562.184568%
D7141166623.330066%

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 8930 7141 0 0 0.00% 0.00%
B 8931 7141 100 100 1.12% 1.40%
C 8931 7141 0 0 0.00% 0.00%
D 8931 7142 1363 1363 15.26% 19.08%

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 6 16 134915 746.75 891 872 179.5
A 13 254 11228 57.69 891 872 179.5
A 3 137 8596 43.03 891 872 179.5
B 10 245 457672 2685.81 888 863 170.1
B 5 255 193091 1130.21 888 863 170.1
B 15 32 78915 458.91 888 863 170.1
C 14 238 136687 669.64 860 866 202.8
C 13 61 5836 24.5 860 866 202.8
C 7 247 3649 13.72 860 866 202.8
D 1 52 4814669 26127.14 770 749 184.2
D 11 176 202055 1092.57 770 749 184.2
D 12 233 166689 900.63 770 749 184.2

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