ASTROSAT CZTI

Data Quality Report

Orbit 37964

Creation date: 2024-06-27T21:46:44.419607
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/AS1A11_082T01_9000005356_37964cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37964cztM0_level2_quad_clean.evt
Size (bytes)436,236,48068,345,280
Size416.0 MB 65.2 MB
Events in quadrant A4,119,383427,807
Events in quadrant B3,033,354436,756
Events in quadrant C2,815,564427,690
Events in quadrant D2,867,414389,765

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160713
B0127022
C0117132
D0124782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5536681.228324%
B5536901.625723%
C5536330.596098%
D5536631.138006%

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 7119 5537 28 28 0.39% 0.51%
B 7119 5537 61 61 0.86% 1.10%
C 7119 5537 20 20 0.28% 0.36%
D 7119 5537 58 58 0.81% 1.05%

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 15 222 1297770 10222.4 620 607 126.9
A 10 83 371264 2920.99 620 607 126.9
A 12 189 17167 130.5 620 607 126.9
B 5 172 211812 1778.31 620 603 118.8
B 5 184 92719 775.58 620 603 118.8
B 4 81 87098 728.26 620 603 118.8
C 15 214 233581 1635.06 610 612 142.5
C 0 10 135962 949.93 610 612 142.5
C 14 254 43001 297.5 610 612 142.5
D 13 249 225744 1530.03 604 588 147.2
D 1 52 104044 703.03 604 588 147.2
D 10 253 45792 307.18 604 588 147.2

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