ASTROSAT CZTI

Data Quality Report

Orbit 36511

Creation date: 2022-06-30T00:53:25.913079
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_035T01_9000005214_36511cztM0_level2.evt modeM0/AS1T05_035T01_9000005214_36511cztM0_level2_quad_clean.evt
Size (bytes)490,942,08073,111,680
Size468.2 MB 69.7 MB
Events in quadrant A2,808,827473,034
Events in quadrant B3,889,509459,572
Events in quadrant C2,951,656465,864
Events in quadrant D4,834,444419,469

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119253
B0152932
C0121502
D0181182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5653200.353794%
B56532173.838670%
C5653540.955245%
D56534938.721033%

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 7145 5654 5 5 0.07% 0.09%
B 7145 5654 146 146 2.04% 2.58%
C 7145 5654 30 30 0.42% 0.53%
D 7145 5654 435 435 6.09% 7.69%

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 211822 1588.31 655 642 133.0
A 15 223 23249 170.03 655 642 133.0
A 9 143 17857 129.48 655 642 133.0
B 4 171 538115 4356.06 640 626 123.4
B 5 172 360743 2918.55 640 626 123.4
B 5 255 327656 2650.4 640 626 123.4
C 15 214 243424 1642.37 630 634 147.8
C 0 10 235614 1589.53 630 634 147.8
C 14 67 12501 80.27 630 634 147.8
D 2 137 607082 3974.84 614 598 152.6
D 2 153 453695 2969.56 614 598 152.6
D 2 250 364234 2383.24 614 598 152.6

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