ASTROSAT CZTI

Data Quality Report

Orbit 28690

Creation date: 2024-06-27T19:54:59.035523
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_021T04_9000004116_28690cztM0_level2.evt modeM0/AS1A10_021T04_9000004116_28690cztM0_level2_quad_clean.evt
Size (bytes)684,521,28079,773,120
Size652.8 MB 76.1 MB
Events in quadrant A3,378,688515,468
Events in quadrant B3,598,112520,749
Events in quadrant C4,048,888495,768
Events in quadrant D9,287,212451,222

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135821
B0143091
C0164411
D0319632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61881061.712993%
B61891662.682178%
C61892594.184844%
D6188167427.052359%

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 7473 6188 0 0 0.00% 0.00%
B 7473 6188 37 37 0.50% 0.60%
C 7474 6189 2 2 0.03% 0.03%
D 7473 6188 1765 1765 23.62% 28.52%

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 11085 58.7 875 860 174.2
A 3 137 7734 39.46 875 860 174.2
A 0 226 7659 39.03 875 860 174.2
B 15 33 119300 742.71 850 832 159.5
B 10 245 108850 677.2 850 832 159.5
B 3 209 23209 140.29 850 832 159.5
C 3 233 495598 2591.11 830 839 190.9
C 14 238 173982 906.77 830 839 190.9
C 2 16 88949 461.44 830 839 190.9
D 8 195 3097526 16748.12 783 765 184.9
D 1 52 3068138 16589.19 783 765 184.9
D 7 238 38035 201.56 783 765 184.9

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