ASTROSAT CZTI

Data Quality Report

Orbit 06498

Creation date: 2024-06-27T15:07:58.286381
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/AS1G06_134T11_9000000870_06498cztM0_level2.evt modeM0/AS1G06_134T11_9000000870_06498cztM0_level2_quad_clean.evt
Size (bytes)422,956,800102,199,680
Size403.4 MB 97.5 MB
Events in quadrant A2,934,164669,190
Events in quadrant B2,992,270691,241
Events in quadrant C2,793,130667,144
Events in quadrant D3,663,192630,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130373
B0131462
C0128142
D0151222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6269641.020896%
B6269430.685915%
C6269100.159515%
D6269691.100654%

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 7574 6270 2 2 0.03% 0.03%
B 7574 6270 1 1 0.01% 0.02%
C 7574 6270 0 0 0.00% 0.00%
D 7574 6270 47 47 0.62% 0.75%

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 15 236 87951 593.31 735 722 147.0
A 8 15 13747 88.59 735 722 147.0
A 0 226 7229 44.26 735 722 147.0
B 0 219 30245 210.65 748 733 140.1
B 4 81 17602 120.41 748 733 140.1
B 0 197 17511 119.76 748 733 140.1
C 1 16 8424 47.65 712 714 161.8
C 13 61 5767 31.23 712 714 161.8
C 12 4 3376 16.45 712 714 161.8
D 8 195 362257 2116.38 702 679 170.8
D 10 15 158945 926.36 702 679 170.8
D 2 152 154700 901.51 702 679 170.8

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