ASTROSAT CZTI

Data Quality Report

Orbit 31981

Creation date: 2024-06-27T20:34:49.618200
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_058T12_9000004674_31981cztM0_level2.evt modeM0/AS1A10_058T12_9000004674_31981cztM0_level2_quad_clean.evt
Size (bytes)655,712,64093,703,680
Size625.3 MB 89.4 MB
Events in quadrant A3,651,321605,819
Events in quadrant B6,048,218591,272
Events in quadrant C4,042,671576,856
Events in quadrant D5,611,798545,112

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155321
B0234151
C0165741
D0217791

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7460871.166220%
B74613084.128133%
C74612483.323951%
D74616929.274896%

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 7770 7461 0 0 0.00% 0.00%
B 7771 7461 101 101 1.30% 1.35%
C 7771 7461 22 22 0.28% 0.29%
D 7771 7461 517 517 6.65% 6.93%

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 14 238 20771 104.31 938 917 190.3
A 13 254 13506 66.14 938 917 190.3
A 3 137 9683 46.05 938 917 190.3
B 6 159 2025245 11293.79 917 892 179.2
B 10 245 270575 1504.55 917 892 179.2
B 0 190 47390 259.41 917 892 179.2
C 0 10 282048 1326.06 893 899 212.0
C 14 238 159898 749.93 893 899 212.0
C 3 233 71561 333.28 893 899 212.0
D 13 249 1357649 6381.64 875 852 212.6
D 8 195 388743 1824.43 875 852 212.6
D 2 250 231151 1083.2 875 852 212.6

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