ASTROSAT CZTI

Data Quality Report

Orbit 16423

Creation date: 2024-06-27T17:22:28.378177
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_069T03_9000002426_16423cztM0_level2.evt modeM0/AS1A05_069T03_9000002426_16423cztM0_level2_quad_clean.evt
Size (bytes)470,393,28089,409,600
Size448.6 MB 85.3 MB
Events in quadrant A3,703,591566,377
Events in quadrant B3,625,613580,912
Events in quadrant C3,273,845555,365
Events in quadrant D3,192,384542,565

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153753
B0151282
C0140452
D0141242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66261732.610927%
B66261061.599759%
C6626961.448838%
D6626610.920616%

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 7557 6627 65 65 0.86% 0.98%
B 7557 6627 18 18 0.24% 0.27%
C 7557 6627 5 5 0.07% 0.08%
D 7557 6627 35 35 0.46% 0.53%

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 563067 3504.42 784 766 160.5
A 15 223 79258 489.18 784 766 160.5
A 15 239 26505 160.41 784 766 160.5
B 15 35 157088 1033.67 789 766 151.2
B 0 244 109662 720.07 789 766 151.2
B 0 189 75369 493.31 789 766 151.2
C 3 233 149250 833.42 758 761 178.2
C 14 238 115832 645.85 758 761 178.2
C 3 9 35953 197.52 758 761 178.2
D 7 38 99569 525.15 769 744 188.2
D 10 70 83102 437.64 769 744 188.2
D 12 218 43041 224.76 769 744 188.2

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