ASTROSAT CZTI

Data Quality Report

Orbit 21181

Creation date: 2024-06-27T18:24:32.184288
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/AS1A05_062T01_9000003132_21181cztM0_level2.evt modeM0/AS1A05_062T01_9000003132_21181cztM0_level2_quad_clean.evt
Size (bytes)743,947,20097,390,080
Size709.5 MB 92.9 MB
Events in quadrant A4,117,935610,930
Events in quadrant B4,271,384619,183
Events in quadrant C4,166,884600,230
Events in quadrant D9,402,803531,654

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180053
B0181763
C0178943
D0339353

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84482673.160511%
B84493233.822938%
C84483664.332386%
D8448127315.068655%

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 8868 8451 0 0 0.00% 0.00%
B 8869 8452 3 3 0.03% 0.04%
C 8868 8449 0 0 0.00% 0.00%
D 8868 8450 922 922 10.40% 10.91%

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 10 229 40338 185.81 1045 1021 211.6
A 13 252 27714 126.15 1045 1021 211.6
A 5 16 15788 69.79 1045 1021 211.6
B 0 190 30850 145.49 1047 1019 205.0
B 0 230 30266 142.64 1047 1019 205.0
B 0 182 27254 127.95 1047 1019 205.0
C 14 238 152978 637.26 1006 1013 238.5
C 3 233 74199 306.9 1006 1013 238.5
C 10 91 18246 72.27 1006 1013 238.5
D 7 238 3217170 13613.75 971 942 236.2
D 1 52 1183622 5006.09 971 942 236.2
D 1 239 961189 4064.56 971 942 236.2

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