ASTROSAT CZTI

Data Quality Report

Orbit 31444

Creation date: 2024-06-27T20:28:35.098622
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/AS1C06_005T01_9000004580_31444cztM0_level2.evt modeM0/AS1C06_005T01_9000004580_31444cztM0_level2_quad_clean.evt
Size (bytes)683,608,320128,119,680
Size651.9 MB 122.2 MB
Events in quadrant A3,258,738892,772
Events in quadrant B8,413,347763,451
Events in quadrant C3,864,852879,777
Events in quadrant D4,698,261861,787

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142922
B0300132
C0159212
D0184582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69142193.167486%
B6914169024.443159%
C69143815.510558%
D69153314.786696%

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 7029 6914 0 0 0.00% 0.00%
B 7029 6914 1176 1176 16.73% 17.01%
C 7029 6915 11 11 0.16% 0.16%
D 7030 6915 137 137 1.95% 1.98%

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 13315 73.66 843 822 169.6
A 3 137 8792 46.99 843 822 169.6
A 0 226 7301 38.2 843 822 169.6
B 12 1 3540157 25173.42 729 710 140.6
B 6 159 1678811 11935.07 729 710 140.6
B 4 80 154924 1096.81 729 710 140.6
C 3 233 386735 2046.71 808 811 188.6
C 14 238 166649 879.51 808 811 188.6
C 0 10 58622 306.6 808 811 188.6
D 8 195 668773 3483.28 819 795 191.8
D 12 218 288487 1500.22 819 795 191.8
D 12 233 174284 904.69 819 795 191.8

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