ASTROSAT CZTI

Data Quality Report

Orbit 04055

Creation date: 2024-06-27T14:36:50.194143
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/AS1G05_241T04_9000000518_04055cztM0_level2.evt modeM0/AS1G05_241T04_9000000518_04055cztM0_level2_quad_clean.evt
Size (bytes)434,306,88080,087,040
Size414.2 MB 76.4 MB
Events in quadrant A3,143,072494,263
Events in quadrant B3,236,283497,727
Events in quadrant C3,058,881491,690
Events in quadrant D3,253,770469,139

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139913
B0141232
C0138702
D0146952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6781400.589883%
B6781630.929067%
C6781350.516148%
D67811241.828639%

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 7666 6782 0 0 0.00% 0.00%
B 7666 6782 7 7 0.09% 0.10%
C 7666 6782 0 0 0.00% 0.00%
D 7666 6782 84 84 1.10% 1.24%

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 8 15 80658 499.66 787 770 159.9
A 0 118 8846 50.51 787 770 159.9
A 0 226 8666 49.39 787 770 159.9
B 14 167 57976 368.19 800 781 155.3
B 15 204 53975 342.43 800 781 155.3
B 12 111 13567 82.31 800 781 155.3
C 9 144 21548 114.65 775 781 181.1
C 12 4 8291 41.46 775 781 181.1
C 13 61 6561 31.91 775 781 181.1
D 13 223 144071 771.81 764 742 185.7
D 2 37 88679 473.53 764 742 185.7
D 13 239 48309 256.14 764 742 185.7

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