ASTROSAT CZTI

Data Quality Report

Orbit 46020

Creation date: 2024-06-27T23:18:49.408271
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/AS1A13_033T02_9000006154_46020cztM0_level2.fits modeM0/AS1A13_033T02_9000006154_46020cztM0_level2_quad_clean.evt
Size (bytes)648,861,12099,123,840
Size618.8 MB 94.5 MB
Events in quadrant A5,708,552695,685
Events in quadrant B9,956,100543,351
Events in quadrant C3,442,473691,989
Events in quadrant D4,407,008615,514

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214201
B0341291
C0147221
D0176951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65171682.577873%
B6517207831.885837%
C65171382.117539%
D65183936.029457%

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 7422 6518 7 7 0.09% 0.11%
B 7422 6517 1619 1619 21.81% 24.84%
C 7422 6517 117 117 1.58% 1.80%
D 7423 6518 274 274 3.69% 4.20%

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 2808746 18167.74 739 722 154.6
A 2 79 19520 121.62 739 722 154.6
A 13 6 11737 71.27 739 722 154.6
B 3 112 7211416 53039.6 674 654 136.0
B 4 171 45245 327.99 674 654 136.0
B 8 234 20932 149.16 674 654 136.0
C 14 254 506297 2937.47 729 732 172.1
C 3 233 39710 226.47 729 732 172.1
C 2 14 29942 169.72 729 732 172.1
D 1 52 964491 5298.6 716 694 181.9
D 2 249 337652 1852.47 716 694 181.9
D 5 33 192490 1054.42 716 694 181.9

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