ASTROSAT CZTI

Data Quality Report

Orbit 20220421_A11_097T22_9000005082_level2

Creation date: 2022-04-24T18:09:34.526465
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/AS1A11_097T22_9000005082cztM0_level2_bc.evt modeM0/AS1A11_097T22_9000005082cztM0_level2_quad_clean.evt
Size (bytes)3,537,014,4001,059,776,640
Size3.3 GB 1010.7 MB
Events in quadrant A23,648,2706,491,784
Events in quadrant B28,050,0826,840,722
Events in quadrant C25,029,0147,050,292
Events in quadrant D25,364,0786,650,984

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02890
B02890
C02890
D02890

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01948930
B02051010
C01770310
D01820090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015080
B015080
C015080
D015080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7387066378.984703%
B7387055837.557872%
C7387016562.241776%
D7387020692.800866%

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 102718 73800 1109 1109 1.08% 1.50%
B 102718 73873 183 183 0.18% 0.25%
C 102718 73871 355 355 0.35% 0.48%
D 102718 73872 616 616 0.60% 0.83%

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 15 169 8538095 10899.32 3525 3467 783.0
A 10 83 1300680 1656.63 3525 3467 783.0
A 13 254 97720 120.37 3525 3467 783.0
B 5 172 4316912 5930.32 3710 3630 727.3
B 5 236 4075060 5597.8 3710 3630 727.3
B 4 171 3914284 5376.74 3710 3630 727.3
C 15 214 2860099 3292.47 3767 3733 867.5
C 0 10 2309365 2657.65 3767 3733 867.5
C 0 207 1535312 1765.42 3767 3733 867.5
D 7 80 2717600 3099.27 3731 3619 875.7
D 12 217 2556261 2915.03 3731 3619 875.7
D 13 249 1516649 1727.83 3731 3619 875.7

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