ASTROSAT CZTI

Data Quality Report

Orbit 35083

Creation date: 2022-03-25T15:37:54.253049
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/AS1T05_015T01_9000005026_35083cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35083cztM0_level2_quad_clean.evt
Size (bytes)557,527,68067,343,040
Size531.7 MB 64.2 MB
Events in quadrant A2,732,606421,667
Events in quadrant B3,323,940429,740
Events in quadrant C2,861,239425,046
Events in quadrant D7,591,138373,946

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115793
B0133032
C0116192
D0265032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5547200.360555%
B55471442.595998%
C5547320.576888%
D5547111020.010817%

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 7159 5548 15 15 0.21% 0.27%
B 7159 5548 92 92 1.29% 1.66%
C 7159 5548 22 22 0.31% 0.40%
D 7159 5548 986 986 13.77% 17.77%

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 81022 600.82 660 646 133.8
A 15 17 52312 386.21 660 646 133.8
A 7 16 25358 184.72 660 646 133.8
B 5 172 535642 4291.84 650 634 124.7
B 0 189 100175 798.52 650 634 124.7
B 5 255 78108 621.5 650 634 124.7
C 15 214 233112 1580.05 637 642 147.1
C 0 10 111071 750.56 637 642 147.1
C 12 250 16818 109.94 637 642 147.1
D 8 195 2623115 17806.24 592 575 147.3
D 2 250 2084029 14146.01 592 575 147.3
D 7 80 200166 1355.16 592 575 147.3

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