ASTROSAT CZTI

Data Quality Report

Orbit 20081

Creation date: 2024-06-27T18:11:02.911977
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_180T01_9000002992_20081cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20081cztM0_level2_quad_clean.evt
Size (bytes)511,536,960108,267,840
Size487.8 MB 103.3 MB
Events in quadrant A3,559,901721,832
Events in quadrant B3,681,911711,690
Events in quadrant C3,536,976689,371
Events in quadrant D4,236,965668,516

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042
B042
C031
D031

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164101380
B0167491492
C0162321396
D0194742190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015812
B01588
C015923
D015715

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7023981.395415%
B70041582.255854%
C70261602.277256%
D69151762.545192%

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 7869 7617 11 11 0.14% 0.14%
B 7869 7621 11 11 0.14% 0.14%
C 7869 7640 0 0 0.00% 0.00%
D 7869 7616 44 44 0.56% 0.58%

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 14 238 72799 392.35 898 882 183.3
A 11 29 17426 90.26 898 882 183.3
A 3 1 11127 55.89 898 882 183.3
B 4 80 39800 227.32 887 865 171.3
B 7 220 28527 161.5 887 865 171.3
B 0 183 28086 158.93 887 865 171.3
C 14 238 133958 649.66 862 869 204.9
C 4 254 37188 177.29 862 869 204.9
C 3 233 9193 40.63 862 869 204.9
D 1 52 691442 3289.16 856 835 210.0
D 12 218 212655 1008.84 856 835 210.0
D 7 238 62131 291.93 856 835 210.0

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