ASTROSAT CZTI

Data Quality Report

Orbit 27270

Creation date: 2024-06-27T19:38:16.462453
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_243T01_9000003918_27270cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27270cztM0_level2_quad_clean.evt
Size (bytes)491,592,960119,177,280
Size468.8 MB 113.7 MB
Events in quadrant A3,327,656827,954
Events in quadrant B4,064,782821,745
Events in quadrant C3,215,618773,517
Events in quadrant D3,878,744773,255

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138120
B0160110
C0133630
D0154250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59151011.707523%
B59162474.175118%
C59161372.315754%
D59161913.228533%

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 7240 5916 0 0 0.00% 0.00%
B 7241 5917 81 81 1.12% 1.37%
C 7241 5917 0 0 0.00% 0.00%
D 7241 5917 66 66 0.91% 1.12%

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 10880 59.65 856 844 168.3
A 12 96 10456 57.13 856 844 168.3
A 13 254 9105 49.1 856 844 168.3
B 10 245 482732 3102.34 828 811 155.3
B 3 64 160390 1027.28 828 811 155.3
B 10 247 111379 711.78 828 811 155.3
C 14 238 129863 708.32 792 799 182.2
C 13 61 5433 25.43 792 799 182.2
C 15 78 1901 6.05 792 799 182.2
D 1 52 627230 3247.88 810 793 192.9
D 12 233 93255 479.39 810 793 192.9
D 2 250 58901 301.27 810 793 192.9

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