ASTROSAT CZTI

Data Quality Report

Orbit 27417

Creation date: 2024-06-27T19:39:51.526779
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_249T01_9000003934_27417cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27417cztM0_level2_quad_clean.evt
Size (bytes)506,430,72091,370,880
Size483.0 MB 87.1 MB
Events in quadrant A3,264,893598,802
Events in quadrant B3,347,181603,640
Events in quadrant C3,990,714559,276
Events in quadrant D4,304,539562,912

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131800
B0134430
C0155230
D0168860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63311151.816459%
B63331101.736934%
C63333595.668719%
D63332013.173851%

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 7431 6331 0 0 0.00% 0.00%
B 7433 6333 0 0 0.00% 0.00%
C 7433 6333 200 200 2.69% 3.16%
D 7433 6333 92 92 1.24% 1.45%

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 9959 54.21 843 826 168.5
A 3 137 7684 40.71 843 826 168.5
A 0 226 7306 38.47 843 826 168.5
B 7 205 71859 453.45 826 806 156.7
B 12 111 18979 115.98 826 806 156.7
B 11 111 17176 104.47 826 806 156.7
C 2 16 783814 4263.94 787 792 183.6
C 14 238 125941 681.5 787 792 183.6
C 10 22 9468 47.25 787 792 183.6
D 1 52 828749 4292.18 812 791 192.9
D 12 227 184543 952.58 812 791 192.9
D 2 250 164155 846.89 812 791 192.9

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