ASTROSAT CZTI

Data Quality Report

Orbit 04057

Creation date: 2024-06-27T14:36:51.665985
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_04057cztM0_level2.evt modeM0/AS1G05_241T04_9000000518_04057cztM0_level2_quad_clean.evt
Size (bytes)482,886,72085,703,040
Size460.5 MB 81.7 MB
Events in quadrant A3,528,596520,991
Events in quadrant B3,690,563526,320
Events in quadrant C3,397,364522,035
Events in quadrant D3,498,166504,432

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156842
B0160651
C0154861
D0160631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74951261.681121%
B74951301.734490%
C7495540.720480%
D7495720.960640%

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 7660 7496 0 0 0.00% 0.00%
B 7660 7495 19 19 0.25% 0.25%
C 7660 7496 3 3 0.04% 0.04%
D 7660 7496 19 19 0.25% 0.25%

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 14 111 121368 678.34 863 843 177.7
A 8 15 66010 366.77 863 843 177.7
A 0 226 9256 47.35 863 843 177.7
B 14 167 204766 1181.07 879 856 172.6
B 15 204 46019 261.59 879 856 172.6
B 0 229 17018 93.61 879 856 172.6
C 8 128 21492 102.44 852 858 201.4
C 12 4 18604 88.1 852 858 201.4
C 8 144 8470 37.79 852 858 201.4
D 13 239 147862 704.5 846 819 208.7
D 2 14 66214 313.31 846 819 208.7
D 2 37 36600 171.43 846 819 208.7

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