ASTROSAT CZTI

Data Quality Report

Orbit 43868

Creation date: 2024-06-27T22:56:44.899996
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/AS1A13_087T01_9000005908_43868cztM0_level2.fits modeM0/AS1A13_087T01_9000005908_43868cztM0_level2_quad_clean.evt
Size (bytes)616,291,200112,435,200
Size587.7 MB 107.2 MB
Events in quadrant A4,592,872769,719
Events in quadrant B6,028,136705,699
Events in quadrant C5,303,259759,833
Events in quadrant D6,331,604668,367

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181293
B0226607
C0207303
D0236953

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71873584.981216%
B7186119116.573894%
C71864185.816866%
D718680711.230170%

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 7806 7186 21 21 0.27% 0.29%
B 7805 7185 699 699 8.96% 9.73%
C 7805 7186 113 113 1.45% 1.57%
D 7805 7185 616 616 7.89% 8.57%

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 1054059 6011.81 849 833 175.2
A 15 223 159466 905.47 849 833 175.2
A 2 79 78085 440.95 849 833 175.2
B 5 235 2303083 14543.41 793 768 158.3
B 0 200 410533 2588.43 793 768 158.3
B 0 183 73563 459.84 793 768 158.3
C 3 233 1707914 8647.37 829 834 197.4
C 1 16 127315 640.7 829 834 197.4
C 14 254 98316 493.8 829 834 197.4
D 13 249 687745 3375.18 817 792 203.5
D 12 233 662602 3251.65 817 792 203.5
D 5 235 603009 2958.85 817 792 203.5

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