ASTROSAT CZTI

Data Quality Report

Orbit 37091

Creation date: 2024-06-27T21:35:28.285814
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/AS1A09_138T04_9000005282_37091cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37091cztM0_level2_quad_clean.evt
Size (bytes)460,296,00084,303,360
Size439.0 MB 80.4 MB
Events in quadrant A3,039,442552,489
Events in quadrant B3,206,254554,724
Events in quadrant C3,154,014538,817
Events in quadrant D4,141,549496,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127013
B0133832
C0127712
D0161902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5878280.476353%
B5878841.429058%
C5878500.850629%
D58783475.903368%

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 7221 5879 17 17 0.24% 0.29%
B 7221 5879 58 58 0.80% 0.99%
C 7221 5879 37 37 0.51% 0.63%
D 7221 5879 330 330 4.57% 5.61%

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 273133 1963.71 681 669 138.7
A 15 237 53542 381.07 681 669 138.7
A 9 143 34843 246.3 681 669 138.7
B 5 184 162423 1230.26 674 656 131.5
B 5 172 151461 1146.89 674 656 131.5
B 5 255 64712 487.15 674 656 131.5
C 15 214 250354 1609.43 659 664 155.1
C 0 10 194093 1246.79 659 664 155.1
C 15 159 43593 276.71 659 664 155.1
D 13 249 871033 5473.02 647 631 159.0
D 13 171 205495 1288.17 647 631 159.0
D 2 153 129959 813.2 647 631 159.0

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