ASTROSAT CZTI

Data Quality Report

Orbit 20220329_A11_065T05_9000005032_level2

Creation date: 2022-04-01T12:27:00.140561
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_065T05_9000005032cztM0_level2_bc.evt modeM0/AS1A11_065T05_9000005032cztM0_level2_quad_clean.evt
Size (bytes)953,334,720241,295,040
Size909.2 MB 230.1 MB
Events in quadrant A6,031,4111,627,075
Events in quadrant B5,573,9591,646,445
Events in quadrant C4,675,4391,613,524
Events in quadrant D11,667,1791,484,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0418340
B0388270
C0333110
D0573100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1355211658.596517%
B135527175.290732%
C135523672.708087%
D1355211298.330874%

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 19921 13555 1 1 0.01% 0.01%
B 19920 13552 76 76 0.38% 0.56%
C 19920 13551 58 58 0.29% 0.43%
D 19920 13552 395 395 1.98% 2.91%

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 15 169 2704498 15584.62 797 788 173.5
A 10 83 178991 1027.19 797 788 173.5
A 13 6 42267 239.09 797 788 173.5
B 5 236 1925767 12277.14 797 784 156.8
B 5 172 332472 2115.44 797 784 156.8
B 0 189 97274 615.39 797 784 156.8
C 0 10 926983 5324.34 773 770 174.0
C 15 214 537133 3083.28 773 770 174.0
C 9 187 80226 456.75 773 770 174.0
D 8 195 6403697 34799.59 773 752 184.0
D 13 249 495024 2686.34 773 752 184.0
D 2 250 422521 2292.29 773 752 184.0

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