ASTROSAT CZTI

Data Quality Report

Orbit 39954

Creation date: 2024-06-27T22:10:33.014031
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/AS1C07_001T01_9000005514_39954cztM0_level2.fits modeM0/AS1C07_001T01_9000005514_39954cztM0_level2_quad_clean.evt
Size (bytes)311,031,36084,539,520
Size296.6 MB 80.6 MB
Events in quadrant A2,966,522582,573
Events in quadrant B3,071,632558,653
Events in quadrant C2,344,480561,903
Events in quadrant D2,749,132513,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117156
B0124602
C0101082
D0115176

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48901022.085890%
B48923907.972200%
C4892140.286182%
D4889741.513602%

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 7015 4892 85 85 1.21% 1.74%
B 7015 4893 343 343 4.89% 7.01%
C 7015 4893 10 10 0.14% 0.20%
D 7015 4892 78 78 1.11% 1.59%

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 440448 4026.49 544 534 109.3
A 13 248 181584 1657.13 544 534 109.3
A 6 10 123987 1129.95 544 534 109.3
B 5 255 528018 5388.83 518 505 97.9
B 4 171 477731 4875.12 518 505 97.9
B 0 230 24312 243.2 518 505 97.9
C 15 214 206147 1713.56 520 523 120.0
C 0 10 53975 445.44 520 523 120.0
C 14 254 21724 176.68 520 523 120.0
D 2 249 219017 1742.47 520 505 125.4
D 2 250 115120 913.97 520 505 125.4
D 12 227 112861 895.96 520 505 125.4

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