ASTROSAT CZTI

Data Quality Report

Orbit 35538

Creation date: 2022-04-25T11:59:51.245070
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_046T08_9000005088_35538cztM0_level2.evt modeM0/AS1A11_046T08_9000005088_35538cztM0_level2_quad_clean.evt
Size (bytes)306,434,88049,046,400
Size292.2 MB 46.8 MB
Events in quadrant A1,588,439308,540
Events in quadrant B1,843,542321,222
Events in quadrant C1,973,770319,506
Events in quadrant D3,648,958301,011

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A067832
B076591
C077621
D0130381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A330440.121065%
B3304862.602906%
C3304952.875303%
D330479924.182809%

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 5457 3305 0 0 0.00% 0.00%
B 5457 3305 47 47 0.86% 1.42%
C 5457 3305 79 79 1.45% 2.39%
D 5457 3305 694 694 12.72% 21.00%

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 75518 958.1 386 379 78.4
A 8 6 13816 171.34 386 379 78.4
A 13 254 4802 56.4 386 379 78.4
B 5 172 153669 2113.37 380 372 72.5
B 5 255 124263 1707.98 380 372 72.5
B 0 219 21516 291.49 380 372 72.5
C 0 10 184852 2165.02 371 375 85.2
C 0 207 152473 1785.02 371 375 85.2
C 15 214 145320 1701.07 371 375 85.2
D 12 235 2123498 26858.2 324 315 79.1
D 2 250 63567 800.14 324 315 79.1
D 8 195 59456 748.13 324 315 79.1

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