ASTROSAT CZTI

Data Quality Report

Orbit 20441

Creation date: 2024-06-27T18:15:36.816601
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/AS1C04_009T06_9000003020_20441cztM0_level2.evt modeM0/AS1C04_009T06_9000003020_20441cztM0_level2_quad_clean.evt
Size (bytes)445,847,040127,399,680
Size425.2 MB 121.5 MB
Events in quadrant A3,123,167864,437
Events in quadrant B3,622,561866,497
Events in quadrant C3,036,911841,359
Events in quadrant D3,272,186827,279

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137092
B0152583
C0134672
D0146642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6575801.216730%
B65741462.220870%
C6574851.292972%
D65741452.205659%

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 7175 6576 6 6 0.08% 0.09%
B 7174 6575 30 30 0.42% 0.46%
C 7174 6576 0 0 0.00% 0.00%
D 7174 6575 94 94 1.31% 1.43%

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 5 16 69089 440.56 774 758 155.1
A 12 16 37124 234.47 774 758 155.1
A 5 168 23837 148.8 774 758 155.1
B 7 220 186002 1281.18 771 753 144.6
B 0 197 164166 1130.16 771 753 144.6
B 0 219 80575 552.05 771 753 144.6
C 14 238 119152 691.5 743 747 171.2
C 3 233 11432 62.4 743 747 171.2
C 9 54 8288 44.04 743 747 171.2
D 12 218 206239 1138.87 745 720 180.5
D 7 38 68487 375.52 745 720 180.5
D 13 153 56384 308.46 745 720 180.5

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