ASTROSAT CZTI

Data Quality Report

Orbit 13427

Creation date: 2024-06-27T16:40:38.337256
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/AS1A04_103T01_9000001988_13427cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13427cztM0_level2_quad_clean.evt
Size (bytes)852,439,68068,405,760
Size812.9 MB 65.2 MB
Events in quadrant A3,102,198481,736
Events in quadrant B3,157,193494,922
Events in quadrant C3,128,273480,686
Events in quadrant D15,984,396154,781

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134883
B0135252
C0135882
D0518732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6553570.869831%
B6553640.976652%
C6553650.991912%
D6553563886.036930%

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 7529 6554 1 1 0.01% 0.02%
B 7529 6554 2 2 0.03% 0.03%
C 7529 6554 10 10 0.13% 0.15%
D 7528 6553 5611 5611 74.54% 85.62%

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 1 162 17688 104.13 795 776 162.4
A 15 69 10206 58.06 795 776 162.4
A 0 226 7183 39.45 795 776 162.4
B 3 209 21481 135.77 794 775 152.5
B 12 111 17583 110.21 794 775 152.5
B 11 111 15183 94.47 794 775 152.5
C 14 234 44230 240.86 778 783 180.4
C 3 233 39913 216.92 778 783 180.4
C 14 220 8373 42.08 778 783 180.4
D 1 52 13685691 202150.73 281 272 67.7
D 13 249 1069468 15793.36 281 272 67.7
D 2 136 81365 1197.84 281 272 67.7

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