ASTROSAT CZTI

Data Quality Report

Orbit 35623

Creation date: 2024-06-27T21:15:50.932294
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_028T01_9000005100_35623cztM0_level2.evt modeM0/AS1T05_028T01_9000005100_35623cztM0_level2_quad_clean.evt
Size (bytes)450,498,24098,274,240
Size429.6 MB 93.7 MB
Events in quadrant A2,794,548670,291
Events in quadrant B3,810,637664,879
Events in quadrant C3,150,325661,482
Events in quadrant D3,535,920616,235

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114193
B0145662
C0123322
D0139952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5182250.482439%
B51823817.352374%
C51821462.817445%
D51822094.033192%

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 9127 5184 8 8 0.09% 0.15%
B 9127 5184 266 266 2.91% 5.13%
C 9127 5184 108 108 1.18% 2.08%
D 9127 5184 167 167 1.83% 3.22%

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 141269 1077.04 650 640 130.6
A 15 169 126111 960.95 650 640 130.6
A 7 3 9300 66.32 650 640 130.6
B 5 172 1209429 10198.83 634 620 118.5
B 0 189 50233 418.59 634 620 118.5
B 0 245 22408 183.83 634 620 118.5
C 0 10 431394 2973.38 626 632 144.9
C 15 214 213221 1467.42 626 632 144.9
C 9 187 34863 236.28 626 632 144.9
D 12 17 438135 2921.38 619 605 149.8
D 2 250 173540 1154.68 619 605 149.8
D 7 80 109312 725.84 619 605 149.8

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