ASTROSAT CZTI

Data Quality Report

Orbit 36016

Creation date: 2022-08-09T19:25:23.258648
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/AS1T04_069T01_9000005158_36016cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36016cztM0_level2_quad_clean.evt
Size (bytes)471,697,92055,056,960
Size449.8 MB 52.5 MB
Events in quadrant A2,601,742354,375
Events in quadrant B3,023,152358,343
Events in quadrant C4,864,307286,203
Events in quadrant D3,462,095322,134

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104653
B0119422
C0175132
D0131632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4931150.304198%
B4931631.277631%
C493193719.002231%
D49312685.435003%

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 7053 4932 7 7 0.10% 0.14%
B 7053 4932 26 26 0.37% 0.53%
C 7053 4932 738 738 10.46% 14.96%
D 7053 4931 244 244 3.46% 4.95%

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 160632 1270.87 622 611 125.9
A 10 248 23685 183.25 622 611 125.9
A 13 254 8397 61.84 622 611 125.9
B 0 213 289798 2473.86 617 602 116.9
B 5 172 103458 879.86 617 602 116.9
B 4 171 65692 556.8 617 602 116.9
C 9 187 2432909 19513.64 537 541 124.6
C 15 214 187079 1496.5 537 541 124.6
C 0 10 140176 1120.22 537 541 124.6
D 12 6 387411 2670.55 597 582 144.9
D 12 227 356794 2459.18 597 582 144.9
D 12 235 117040 803.99 597 582 144.9

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