ASTROSAT CZTI

Data Quality Report

Orbit 20211210_A11_060T01_9000004808_level2

Creation date: 2021-12-18T23:06:43.725447
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/AS1A11_060T01_9000004808cztM0_level2_bc.evt modeM0/AS1A11_060T01_9000004808cztM0_level2_quad_clean.evt
Size (bytes)17,400,430,0803,853,039,680
Size16.2 GB 3.6 GB
Events in quadrant A93,673,53824,426,184
Events in quadrant B119,632,70824,091,033
Events in quadrant C127,850,44424,097,192
Events in quadrant D164,865,35522,918,977

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07505420
B08578260
C08436580
D09775760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011710
B011710
C011710
D011710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063100
B063100
C063100
D063100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A309059100983.267337%
B309059225277.288900%
C30905991342.955423%
D309059153434.964424%

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 425756 309070 466 466 0.11% 0.15%
B 425756 309048 945 945 0.22% 0.31%
C 425756 309060 1256 1256 0.30% 0.41%
D 425756 309059 2114 2114 0.50% 0.68%

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 15 169 30644965 8746.49 16053 15811 3501.9
A 13 254 488114 134.87 16053 15811 3501.9
A 12 16 477024 131.7 16053 15811 3501.9
B 5 172 39084613 12408.81 15995 15631 3148.5
B 15 222 5251328 1662.92 15995 15631 3148.5
B 5 255 4471106 1415.12 15995 15631 3148.5
C 3 233 34781264 9624.88 15814 15690 3612.1
C 15 214 12408573 3430.98 15814 15690 3612.1
C 0 10 7575124 2092.84 15814 15690 3612.1
D 8 195 54025764 14449.58 15700 15229 3737.9
D 2 250 11936053 3189.21 15700 15229 3737.9
D 13 249 6893885 1840.27 15700 15229 3737.9

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