ASTROSAT CZTI

Data Quality Report

Orbit 28692

Creation date: 2024-06-27T19:55:00.883529
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_021T04_9000004116_28692cztM0_level2.evt modeM0/AS1A10_021T04_9000004116_28692cztM0_level2_quad_clean.evt
Size (bytes)584,648,64073,604,160
Size557.6 MB 70.2 MB
Events in quadrant A3,559,521439,667
Events in quadrant B4,292,330444,909
Events in quadrant C3,857,890430,918
Events in quadrant D5,515,560419,064

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148282
B0170882
C0156452
D0212512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7096901.268320%
B70963334.692785%
C70961722.423901%
D70963254.580045%

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 7896 7096 0 0 0.00% 0.00%
B 7896 7096 160 160 2.03% 2.25%
C 7896 7096 7 7 0.09% 0.10%
D 7896 7096 228 228 2.89% 3.21%

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 13230 66.55 920 898 185.3
A 3 137 8856 42.95 920 898 185.3
A 0 226 7969 38.16 920 898 185.3
B 10 245 720727 4155.21 899 876 173.2
B 12 111 21136 116.95 899 876 173.2
B 3 209 20551 113.57 899 876 173.2
C 3 233 198442 956.54 882 891 206.5
C 14 238 145813 701.71 882 891 206.5
C 2 16 71456 341.67 882 891 206.5
D 1 52 1551478 7211.28 887 864 215.0
D 8 195 441226 2047.94 887 864 215.0
D 7 80 59503 272.7 887 864 215.0

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