ASTROSAT CZTI

Data Quality Report

Orbit 35773

Creation date: 2022-07-18T22:42:22.106434
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_058T14_9000005134_35773cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35773cztM0_level2_quad_clean.evt
Size (bytes)74,059,20018,771,840
Size70.6 MB 17.9 MB
Events in quadrant A499,792126,770
Events in quadrant B497,360126,265
Events in quadrant C552,886119,444
Events in quadrant D621,898118,665

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021321
B020921
C022901
D025181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99720.200602%
B99740.401204%
C997292.908726%
D99770.702106%

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 997 997 1 1 0.10% 0.10%
B 997 997 1 1 0.10% 0.10%
C 997 997 28 28 2.81% 2.81%
D 997 997 9 9 0.90% 0.90%

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 10 83 58219 2359.61 112 110 24.6
A 13 6 2972 116.22 112 110 24.6
A 10 67 2426 94.05 112 110 24.6
B 5 255 17412 734.82 110 107 23.6
B 0 189 10588 445.05 110 107 23.6
B 0 213 9493 398.55 110 107 23.6
C 0 10 83409 3203.39 103 103 26.0
C 15 214 45110 1730.66 103 103 26.0
C 9 187 20258 775.03 103 103 26.0
D 7 223 74043 2635.69 106 102 28.1
D 13 249 52586 1870.83 106 102 28.1
D 8 195 32867 1167.94 106 102 28.1

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