ASTROSAT CZTI

Data Quality Report

Orbit 19236

Creation date: 2024-06-27T18:00:29.026640
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/AS1C04_001T01_9000002846_19236cztM0_level2.evt modeM0/AS1C04_001T01_9000002846_19236cztM0_level2_quad_clean.evt
Size (bytes)463,484,160131,100,480
Size442.0 MB 125.0 MB
Events in quadrant A3,157,195884,407
Events in quadrant B3,234,310916,858
Events in quadrant C3,670,405887,645
Events in quadrant D3,563,208858,783

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134210
B0136490
C0149880
D0147640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6067911.499918%
B6067881.450470%
C60671602.637218%
D60671181.944948%

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 7407 6067 10 10 0.14% 0.16%
B 7407 6067 1 1 0.01% 0.02%
C 7407 6067 7 7 0.09% 0.12%
D 7407 6067 33 33 0.45% 0.54%

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 13 170 38007 232.88 801 787 159.8
A 13 252 34843 213.09 801 787 159.8
A 13 254 8051 45.45 801 787 159.8
B 0 190 24637 160.65 808 788 148.5
B 6 36 20131 130.29 808 788 148.5
B 3 64 19915 128.84 808 788 148.5
C 3 233 371346 2056.38 792 797 180.2
C 14 238 126995 700.34 792 797 180.2
C 0 207 79304 435.68 792 797 180.2
D 9 68 340588 1773.61 798 774 191.6
D 12 16 61502 316.96 798 774 191.6
D 7 96 52753 271.3 798 774 191.6

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