ASTROSAT CZTI

Data Quality Report

Orbit 15767

Creation date: 2024-06-27T17:13:37.660014
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/AS1G08_028T01_9000002334_15767cztM0_level2.evt modeM0/AS1G08_028T01_9000002334_15767cztM0_level2_quad_clean.evt
Size (bytes)532,791,36081,688,320
Size508.1 MB 77.9 MB
Events in quadrant A3,712,518486,400
Events in quadrant B3,874,103502,928
Events in quadrant C3,831,161476,766
Events in quadrant D4,187,283464,811

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162404
B0164293
C0163363
D0177993

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78053324.253684%
B78053614.625240%
C78053434.394619%
D78053093.959001%

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 8331 7809 0 0 0.00% 0.00%
B 8331 7809 0 0 0.00% 0.00%
C 8331 7809 1 1 0.01% 0.01%
D 8331 7809 30 30 0.36% 0.38%

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 0 226 8401 37.88 964 940 197.0
A 3 137 7084 31.19 964 940 197.0
A 12 194 7022 30.88 964 940 197.0
B 0 190 24691 127.26 966 938 186.7
B 12 111 22781 117.02 966 938 186.7
B 11 111 19762 100.85 966 938 186.7
C 14 238 141863 644.39 929 933 218.7
C 3 233 34709 154.44 929 933 218.7
C 10 187 14179 60.57 929 933 218.7
D 1 52 482441 1924.59 929 908 250.2
D 10 70 99986 395.99 929 908 250.2
D 5 51 54411 213.84 929 908 250.2

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