ASTROSAT CZTI

Data Quality Report

Orbit 25035

Creation date: 2024-06-27T19:13:02.558721
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_206T01_9000003672_25035cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25035cztM0_level2_quad_clean.evt
Size (bytes)1,583,593,920235,560,960
Size1.5 GB 224.6 MB
Events in quadrant A8,578,1191,529,673
Events in quadrant B8,980,6511,542,237
Events in quadrant C8,918,7591,477,600
Events in quadrant D20,267,5231,342,430

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0372253
B0381173
C0376483
D0726153

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180281951.081651%
B180292611.447668%
C180292931.625159%
D18029216111.986244%

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 19733 18031 1 1 0.01% 0.01%
B 19734 18030 25 25 0.13% 0.14%
C 19734 18032 8 8 0.04% 0.04%
D 19734 18030 1582 1582 8.02% 8.77%

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 11 208 74628 163.85 2181 2133 442.4
A 4 2 66900 146.38 2181 2133 442.4
A 15 174 35424 75.24 2181 2133 442.4
B 0 245 148278 353.28 2165 2111 413.7
B 3 64 89163 210.4 2165 2111 413.7
B 15 33 87204 205.67 2165 2111 413.7
C 7 247 373770 753.96 2093 2102 493.0
C 14 238 330324 665.83 2093 2102 493.0
C 2 16 20624 37.57 2093 2102 493.0
D 7 238 5378637 10844.12 2043 1989 495.8
D 8 195 4537345 9147.32 2043 1989 495.8
D 1 52 1986319 4002.18 2043 1989 495.8

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