ASTROSAT CZTI

Data Quality Report

Orbit 34372

Creation date: 2022-02-05T14:21:10.274580
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_019T01_9000004906_34372cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34372cztM0_level2_quad_clean.evt
Size (bytes)664,488,00061,050,240
Size633.7 MB 58.2 MB
Events in quadrant A2,343,048409,847
Events in quadrant B3,602,350398,479
Events in quadrant C5,482,217388,259
Events in quadrant D8,354,557295,909

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102881
B0139751
C0199431
D0283941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5062180.355591%
B50622545.017780%
C50624448.771237%
D5062220743.599368%

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 6405 5063 5 5 0.08% 0.10%
B 6405 5063 182 182 2.84% 3.59%
C 6405 5063 395 395 6.17% 7.80%
D 6405 5062 1996 1996 31.16% 39.43%

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 9 143 44272 363.77 589 577 120.1
A 10 83 19828 160.27 589 577 120.1
A 13 254 9574 74.9 589 577 120.1
B 5 31 609527 5469.16 577 562 111.3
B 5 172 404155 3624.7 577 562 111.3
B 4 251 76780 684.52 577 562 111.3
C 4 254 2896808 22129.15 560 564 130.9
C 15 214 207154 1578.48 560 564 130.9
C 14 67 129429 984.61 560 564 130.9
D 12 235 2428726 19238.0 467 458 126.2
D 7 223 2425189 19209.98 467 458 126.2
D 8 195 1389168 11002.08 467 458 126.2

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