ASTROSAT CZTI

Data Quality Report

Orbit 20191005_A07_005T01_9000003224_level2

Creation date: 2025-12-04T13:39:32.613377
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/AS1A07_005T01_9000003224cztM0_level2.fits modeM0/AS1A07_005T01_9000003224cztM0_level2_quad_clean.evt
Size (bytes)2,152,782,7202,036,263,680
Size2.0 GB 1.9 GB
Events in quadrant A13,742,89012,990,255
Events in quadrant B13,342,71013,252,315
Events in quadrant C13,643,57412,442,257
Events in quadrant D8,995,2807,556,913

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03790
B03790
C03790
D03790

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05010880
B05078440
C04704360
D012369660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045340
B045960
C045840
D045880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22526255592.467793%
B22524043201.917954%
C22526832251.431628%
D2252239826843.631423%

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 290480 225509 0 0 0.00% 0.00%
B 290480 225468 0 0 0.00% 0.00%
C 290480 225538 0 0 0.00% 0.00%
D 290479 224832 0 0 0.00% 0.00%

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 0 29 13011 11.26 3578 3363 857.2
A 7 110 11181 9.12 3578 3363 857.2
A 0 30 10441 8.26 3578 3363 857.2
B 2 9 10427 10.2 3535 3377 691.3
B 5 128 8924 8.02 3535 3377 691.3
B 3 17 8808 7.86 3535 3377 691.3
C 1 80 10635 7.91 3600 3366 919.0
C 1 81 10352 7.6 3600 3366 919.0
C 12 241 9381 6.55 3600 3366 919.0
D 6 231 6497 6.16 2571 2349 673.5
D 3 14 6362 5.96 2571 2349 673.5
D 10 189 6360 5.95 2571 2349 673.5

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