ASTROSAT CZTI

Data Quality Report

Orbit 31512

Creation date: 2024-06-27T20:29:20.632281
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/AS1A10_119T01_9000004590_31512cztM0_level2.evt modeM0/AS1A10_119T01_9000004590_31512cztM0_level2_quad_clean.evt
Size (bytes)753,753,60085,538,880
Size718.8 MB 81.6 MB
Events in quadrant A8,885,201478,739
Events in quadrant B5,266,427588,916
Events in quadrant C3,435,717566,028
Events in quadrant D4,825,317527,282

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304042
B0195022
C0136712
D0185092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6138291747.523623%
B61391532.492263%
C61391191.938426%
D61391722.801759%

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 7493 6139 2208 2208 29.47% 35.97%
B 7494 6140 41 41 0.55% 0.67%
C 7494 6140 50 50 0.67% 0.81%
D 7494 6140 199 199 2.66% 3.24%

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 0 13 6470949 52396.47 626 619 123.5
A 13 254 8564 64.34 626 619 123.5
A 3 137 5858 42.43 626 619 123.5
B 6 159 1707607 11078.31 822 803 154.1
B 5 172 142065 916.89 822 803 154.1
B 4 80 59495 380.95 822 803 154.1
C 0 10 192037 1037.33 790 800 184.4
C 14 238 129360 697.35 790 800 184.4
C 2 114 13931 71.23 790 800 184.4
D 8 195 1099420 5870.82 781 761 187.1
D 12 79 384371 2049.87 781 761 187.1
D 2 250 149496 794.78 781 761 187.1

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