ASTROSAT CZTI

Data Quality Report

Orbit 20220212_A10_071T14_9000004924_level2

Creation date: 2022-02-14T16:12:06.823463
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_071T14_9000004924cztM0_level2_bc.evt modeM0/AS1A10_071T14_9000004924cztM0_level2_quad_clean.evt
Size (bytes)1,362,055,680436,400,640
Size1.3 GB 416.2 MB
Events in quadrant A9,112,7722,816,012
Events in quadrant B9,233,1382,872,913
Events in quadrant C7,971,4832,867,815
Events in quadrant D12,986,1042,699,527

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0718010
B0723680
C0623260
D0824670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05840
B05840
C05840
D05840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2855212814.486551%
B2855216375.733399%
C285521480.518352%
D2855210373.631970%

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 41673 28558 38 38 0.09% 0.13%
B 41673 28554 47 47 0.11% 0.16%
C 41673 28555 41 41 0.10% 0.14%
D 41673 28553 174 174 0.42% 0.61%

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 2844178 8404.79 1551 1528 338.2
A 10 83 136461 398.95 1551 1528 338.2
A 13 254 50230 144.0 1551 1528 338.2
B 5 172 2420844 8009.68 1545 1514 302.1
B 0 189 264193 869.65 1545 1514 302.1
B 0 229 207738 682.75 1545 1514 302.1
C 15 214 1146161 3255.91 1562 1558 351.5
C 0 10 386936 1096.24 1562 1558 351.5
C 15 208 154992 436.45 1562 1558 351.5
D 8 195 2877371 7922.89 1548 1507 363.0
D 7 223 1107288 3046.38 1548 1507 363.0
D 2 250 729383 2005.27 1548 1507 363.0

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