ASTROSAT CZTI

Data Quality Report

Orbit 38409

Creation date: 2024-06-27T21:52:22.754864
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/AS1A12_018T01_9000005386_38409cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38409cztM0_level2_quad_clean.evt
Size (bytes)367,868,160100,321,920
Size350.8 MB 95.7 MB
Events in quadrant A3,481,808666,248
Events in quadrant B3,025,787683,901
Events in quadrant C2,923,854660,085
Events in quadrant D3,711,724601,865

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142473
B0131422
C0124842
D0152502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60911001.641767%
B6091310.508948%
C609190.147759%
D60911492.446232%

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 8897 6093 67 67 0.75% 1.10%
B 8897 6093 6 6 0.07% 0.10%
C 8897 6093 4 4 0.04% 0.07%
D 8897 6093 117 117 1.32% 1.92%

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 429582 3166.7 668 654 135.4
A 9 143 207790 1529.25 668 654 135.4
A 12 189 61750 451.06 668 654 135.4
B 0 183 106119 822.6 667 649 128.2
B 4 171 94849 734.7 667 649 128.2
B 0 155 70868 547.66 667 649 128.2
C 15 214 257230 1659.42 658 660 154.6
C 10 20 43036 274.07 658 660 154.6
C 14 254 16007 99.26 658 660 154.6
D 2 153 379692 2392.42 651 632 158.4
D 2 250 172722 1086.14 651 632 158.4
D 12 6 158286 995.03 651 632 158.4

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