ASTROSAT CZTI

Data Quality Report

Orbit 31898

Creation date: 2024-06-27T20:34:18.165593
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/AS1T04_044T01_9000004652_31898cztM0_level2.evt modeM0/AS1T04_044T01_9000004652_31898cztM0_level2_quad_clean.evt
Size (bytes)606,081,60065,980,800
Size578.0 MB 62.9 MB
Events in quadrant A3,316,873396,995
Events in quadrant B5,648,094377,050
Events in quadrant C4,635,995378,754
Events in quadrant D4,297,927374,540

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01391
B01402
C01402
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014114169
B0228771211
C018525308
D017488256

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6777490.723034%
B66762553.819652%
C67562443.611604%
D6761971.434699%

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 7835 6826 2 2 0.03% 0.03%
B 7835 6731 119 119 1.52% 1.77%
C 7835 6824 45 45 0.57% 0.66%
D 7835 6820 51 51 0.65% 0.75%

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 15 174 12405 67.01 856 838 172.6
A 13 254 9482 50.07 856 838 172.6
A 3 137 8870 46.53 856 838 172.6
B 6 159 1762889 10960.42 831 808 160.8
B 10 245 594963 3695.73 831 808 160.8
B 12 111 20312 121.31 831 808 160.8
C 0 10 666433 3528.32 804 809 188.7
C 3 233 639310 3384.54 804 809 188.7
C 14 238 133284 702.22 804 809 188.7
D 8 195 784068 3989.47 817 793 196.3
D 2 250 229014 1162.4 817 793 196.3
D 12 233 97650 493.32 817 793 196.3

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