ASTROSAT CZTI

Data Quality Report

Orbit 22162

Creation date: 2024-06-27T18:37:38.069962
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/AS1T03_145T01_9000003278_22162cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22162cztM0_level2_quad_clean.evt
Size (bytes)665,959,68087,681,600
Size635.1 MB 83.6 MB
Events in quadrant A3,331,909590,042
Events in quadrant B3,428,815598,549
Events in quadrant C3,356,151575,309
Events in quadrant D9,618,846444,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136932
B0140172
C0138572
D0328482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64001151.796875%
B64001302.031250%
C64001622.531250%
D6400243238.000000%

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 7555 6401 0 0 0.00% 0.00%
B 7555 6401 4 4 0.05% 0.06%
C 7555 6401 0 0 0.00% 0.00%
D 7555 6401 2241 2241 29.66% 35.01%

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 13 254 11326 61.63 863 848 170.0
A 0 226 7394 38.5 863 848 170.0
A 3 137 7025 36.33 863 848 170.0
B 0 230 32241 197.63 855 837 158.9
B 12 111 18995 114.27 855 837 158.9
B 11 111 17065 102.13 855 837 158.9
C 14 238 132108 691.05 825 832 190.0
C 0 10 8532 40.53 825 832 190.0
C 13 61 5818 26.25 825 832 190.0
D 1 52 7047259 45985.21 636 619 153.2
D 13 104 111977 726.7 636 619 153.2
D 2 136 32452 207.74 636 619 153.2

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