ASTROSAT CZTI

Data Quality Report

Orbit 45819

Creation date: 2024-06-27T23:16:30.906725
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/AS1T05_185T01_9000006128_45819cztM0_level2.fits modeM0/AS1T05_185T01_9000006128_45819cztM0_level2_quad_clean.evt
Size (bytes)649,054,080104,598,720
Size619.0 MB 99.8 MB
Events in quadrant A5,938,356733,574
Events in quadrant B4,416,647767,538
Events in quadrant C3,034,276737,032
Events in quadrant D10,111,992456,698

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223122
B0178402
C0139132
D0347152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67711762.599321%
B67711281.890415%
C6771310.457835%
D6771239335.341899%

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 7771 6772 29 29 0.37% 0.43%
B 7771 6772 44 44 0.57% 0.65%
C 7771 6772 15 15 0.19% 0.22%
D 7771 6772 2027 2027 26.08% 29.93%

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 10 83 2950910 19022.72 747 730 155.1
A 15 14 40319 255.27 747 730 155.1
A 4 0 25389 159.0 747 730 155.1
B 3 112 863284 5794.19 756 733 148.9
B 0 171 296597 1987.47 756 733 148.9
B 4 171 106757 712.22 756 733 148.9
C 12 250 60854 341.68 750 753 175.9
C 2 14 34852 193.86 750 753 175.9
C 3 233 12989 69.56 750 753 175.9
D 11 241 2118375 13599.68 613 595 155.7
D 12 2 2007370 12886.85 613 595 155.7
D 1 47 1657468 10639.89 613 595 155.7

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