ASTROSAT CZTI

Data Quality Report

Orbit 16268

Creation date: 2024-06-27T17:20:25.179872
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/AS1A05_182T02_9000002392_16268cztM0_level2.evt modeM0/AS1A05_182T02_9000002392_16268cztM0_level2_quad_clean.evt
Size (bytes)520,594,560117,720,000
Size496.5 MB 112.3 MB
Events in quadrant A3,170,341809,852
Events in quadrant B5,420,682773,235
Events in quadrant C3,191,968780,001
Events in quadrant D3,561,274767,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131193
B0201892
C0132682
D0146622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6225370.594378%
B622571311.453815%
C6225540.867470%
D6225911.461847%

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 7561 6227 2 2 0.03% 0.03%
B 7561 6227 457 457 6.04% 7.34%
C 7561 6227 0 0 0.00% 0.00%
D 7561 6227 72 72 0.95% 1.16%

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 15 174 42511 262.47 805 794 158.9
A 14 4 18285 110.05 805 794 158.9
A 9 143 13759 81.57 805 794 158.9
B 3 112 2249516 15953.35 762 745 141.0
B 0 198 48628 339.69 762 745 141.0
B 0 189 43040 300.05 762 745 141.0
C 14 238 124334 715.26 758 764 172.8
C 0 207 84424 484.25 758 764 172.8
C 3 233 28072 158.06 758 764 172.8
D 1 52 491386 2693.85 765 742 182.1
D 10 70 103033 561.62 765 742 182.1
D 15 0 49007 265.0 765 742 182.1

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