ASTROSAT CZTI

Data Quality Report

Orbit 20220608_T05_009T04_9000005174_level2

Creation date: 2022-06-11T11:54:50.536421
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/AS1T05_009T04_9000005174cztM0_level2_bc.evt modeM0/AS1T05_009T04_9000005174cztM0_level2_quad_clean.evt
Size (bytes)158,650,56058,320,000
Size151.3 MB 55.6 MB
Events in quadrant A894,968377,413
Events in quadrant B1,012,962389,363
Events in quadrant C1,212,957391,249
Events in quadrant D1,438,083360,252

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073740
B080910
C082910
D097930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A349680.228833%
B3496551.573227%
C3496300.858124%
D34961564.462243%

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 5589 3497 0 0 0.00% 0.00%
B 5589 3496 4 4 0.07% 0.11%
C 5589 3496 9 9 0.16% 0.26%
D 5589 3496 22 22 0.39% 0.63%

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 94915 2215.42 187 184 42.8
A 8 144 39541 920.42 187 184 42.8
A 15 223 24607 571.17 187 184 42.8
B 5 172 106109 2679.22 191 187 39.5
B 0 190 103533 2614.06 191 187 39.5
B 0 213 31901 802.18 191 187 39.5
C 4 254 181886 3960.96 189 188 45.9
C 15 214 149463 3254.15 189 188 45.9
C 0 10 80216 1744.58 189 188 45.9
D 12 6 364280 7904.06 184 177 46.1
D 12 227 102409 2219.28 184 177 46.1
D 2 250 61714 1335.86 184 177 46.1

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