ASTROSAT CZTI

Data Quality Report

Orbit 36111

Creation date: 2022-08-10T12:06:06.719305
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/AS1T04_069T01_9000005158_36111cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36111cztM0_level2_quad_clean.evt
Size (bytes)2,371,533,120316,143,360
Size2.2 GB 301.5 MB
Events in quadrant A11,987,8332,086,464
Events in quadrant B18,600,0431,930,066
Events in quadrant C17,384,8871,986,617
Events in quadrant D22,146,8851,829,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0519697
B0716556
C0684469
D0827526

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0750
B0750
C0750
D0760

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05180
B05180
C05180
D05180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25301300.118572%
B2530122738.983835%
C2530010003.952569%
D2530121878.643927%

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 32377 25306 3 3 0.01% 0.01%
B 32377 25304 1691 1691 5.22% 6.68%
C 32377 25306 825 825 2.55% 3.26%
D 32377 25306 2101 2101 6.49% 8.30%

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 696742 1191.05 2895 2840 582.6
A 13 6 42246 67.64 2895 2840 582.6
A 8 144 39455 62.85 2895 2840 582.6
B 5 172 5523711 10528.15 2754 2687 524.4
B 5 236 1459981 2778.94 2754 2687 524.4
B 0 190 307612 581.47 2754 2687 524.4
C 1 23 2581514 4071.1 2721 2738 633.4
C 0 207 2421953 3819.21 2721 2738 633.4
C 15 214 1106841 1743.04 2721 2738 633.4
D 1 52 5819781 8803.95 2687 2616 660.7
D 12 6 1492016 2254.12 2687 2616 660.7
D 10 203 1160074 1751.75 2687 2616 660.7

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