ASTROSAT CZTI

Data Quality Report

Orbit 32655

Creation date: 2024-06-27T20:40:30.750824
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/AS1A10_057T03_9000004722_32655cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32655cztM0_level2_quad_clean.evt
Size (bytes)942,174,72057,430,080
Size898.5 MB 54.8 MB
Events in quadrant A5,035,681413,488
Events in quadrant B10,093,468297,907
Events in quadrant C9,085,630283,117
Events in quadrant D3,987,937396,177

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182542
B0334181
C0303501
D0150991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493553710.881459%
B4935323965.633232%
C4935278156.352584%
D49353517.112462%

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 6969 4936 480 480 6.89% 9.72%
B 6969 4936 3151 3151 45.21% 63.84%
C 6969 4936 2430 2430 34.87% 49.23%
D 6969 4936 303 303 4.35% 6.14%

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 39 2519354 21071.44 602 592 119.5
A 1 23 115521 961.47 602 592 119.5
A 15 249 17823 144.15 602 592 119.5
B 3 43 6577338 78105.35 444 436 84.2
B 3 34 335561 3979.85 444 436 84.2
B 3 220 227880 2701.06 444 436 84.2
C 8 35 3732498 35048.63 447 451 106.5
C 8 147 1720939 16157.55 447 451 106.5
C 10 9 459266 4308.85 447 451 106.5
D 2 249 701281 5210.24 573 562 134.5
D 2 250 347129 2576.92 573 562 134.5
D 8 195 279111 2071.17 573 562 134.5

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