ASTROSAT CZTI

Data Quality Report

Orbit 01312

Creation date: 2024-06-27T14:10:49.576200
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/AS1G04_002T02_9000000230_01312cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01312cztM0_level2_quad_clean.evt
Size (bytes)1,087,560,00098,455,680
Size1.0 GB 93.9 MB
Events in quadrant A7,687,229644,323
Events in quadrant B8,615,716640,758
Events in quadrant C7,764,724629,033
Events in quadrant D8,438,743613,985

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274652
B0301921
C0277081
D0297271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6502180.276838%
B6502460.707475%
C6502150.230698%
D65022303.537373%

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 7472 6503 141 141 1.89% 2.17%
B 7472 6503 478 478 6.40% 7.35%
C 7472 6502 155 155 2.07% 2.38%
D 7472 6502 736 736 9.85% 11.32%

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 4 32 87422 182.24 1959 1976 468.9
A 12 243 55889 114.98 1959 1976 468.9
A 15 233 13001 23.51 1959 1976 468.9
B 8 4 685640 1427.32 2037 2039 478.9
B 6 53 76293 155.04 2037 2039 478.9
B 12 52 38825 76.81 2037 2039 478.9
C 15 241 315549 596.57 1888 1955 525.7
C 3 111 26356 46.42 1888 1955 525.7
C 3 79 21774 37.7 1888 1955 525.7
D 10 84 1286660 2286.77 1813 1877 561.8
D 12 22 95888 167.33 1813 1877 561.8
D 10 85 89958 156.77 1813 1877 561.8

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