ASTROSAT CZTI

Data Quality Report

Orbit 27353

Creation date: 2024-06-27T19:39:12.183400
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_255T01_9000003922_27353cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27353cztM0_level2_quad_clean.evt
Size (bytes)478,592,64072,581,760
Size456.4 MB 69.2 MB
Events in quadrant A3,276,476449,465
Events in quadrant B3,370,873452,031
Events in quadrant C3,877,469423,230
Events in quadrant D3,528,943420,471

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136330
B0138240
C0156440
D0145380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6494500.769941%
B6494751.154912%
C64932674.112121%
D6493600.924072%

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 7539 6494 0 0 0.00% 0.00%
B 7539 6494 3 3 0.04% 0.05%
C 7538 6493 93 93 1.23% 1.43%
D 7538 6493 21 21 0.28% 0.32%

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 11133 60.5 848 831 170.3
A 3 137 7603 39.77 848 831 170.3
A 0 226 7178 37.28 848 831 170.3
B 15 32 20118 120.24 843 823 160.5
B 12 111 18995 113.24 843 823 160.5
B 0 244 17145 101.71 843 823 160.5
C 2 16 566243 3031.22 795 798 186.5
C 14 238 128615 685.2 795 798 186.5
C 15 208 81080 430.37 795 798 186.5
D 1 52 326861 1698.54 808 789 192.0
D 2 250 116906 604.86 808 789 192.0
D 2 120 26882 135.92 808 789 192.0

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