ASTROSAT CZTI

Data Quality Report

Orbit 31301

Creation date: 2024-06-27T20:26:23.223776
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/AS1A10_058T08_9000004532_31301cztM0_level2.evt modeM0/AS1A10_058T08_9000004532_31301cztM0_level2_quad_clean.evt
Size (bytes)669,968,64098,190,720
Size638.9 MB 93.6 MB
Events in quadrant A3,856,235623,927
Events in quadrant B6,286,961616,968
Events in quadrant C5,099,145589,919
Events in quadrant D4,511,721592,066

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164972
B0243092
C0202952
D0187282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7915790.998105%
B79162873.625568%
C79164926.215260%
D79161511.907529%

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 8560 7917 0 0 0.00% 0.00%
B 8561 7918 3 3 0.04% 0.04%
C 8561 7918 43 43 0.50% 0.54%
D 8561 7918 53 53 0.62% 0.67%

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 15229 70.9 999 978 201.0
A 3 137 10662 48.18 999 978 201.0
A 0 226 8361 36.73 999 978 201.0
B 6 159 2202286 11449.37 982 951 192.3
B 4 80 160987 832.36 982 951 192.3
B 12 111 24214 120.99 982 951 192.3
C 3 233 1146361 5202.3 935 939 220.2
C 14 238 191714 866.47 935 939 220.2
C 14 254 61020 272.88 935 939 220.2
D 8 195 559049 2288.43 957 934 243.9
D 12 233 186821 762.19 957 934 243.9
D 12 79 88553 359.26 957 934 243.9

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