ASTROSAT CZTI

Data Quality Report

Orbit 34364

Creation date: 2022-02-05T00:23:29.878156
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_34364cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34364cztM0_level2_quad_clean.evt
Size (bytes)708,557,76069,531,840
Size675.7 MB 66.3 MB
Events in quadrant A2,573,042499,128
Events in quadrant B3,564,138494,254
Events in quadrant C7,068,103368,902
Events in quadrant D7,905,149379,463

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107153
B0138862
C0246192
D0271452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A517670.135240%
B51761973.806028%
C5176147228.438949%
D5176128124.748841%

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 7239 5177 0 0 0.00% 0.00%
B 7239 5177 132 132 1.82% 2.55%
C 7239 5177 1321 1321 18.25% 25.52%
D 7239 5177 1386 1386 19.15% 26.77%

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 34352 259.06 653 641 130.1
A 9 143 9599 68.84 653 641 130.1
A 13 6 9188 65.68 653 641 130.1
B 5 172 445702 3686.2 643 629 120.7
B 4 171 273827 2262.69 643 629 120.7
B 4 251 116553 960.11 643 629 120.7
C 4 254 4509256 35979.42 549 554 125.3
C 15 214 191960 1527.42 549 554 125.3
C 0 10 95488 757.57 549 554 125.3
D 7 223 4307004 27513.48 574 563 156.5
D 8 195 736205 4699.95 574 563 156.5
D 12 235 170799 1087.62 574 563 156.5

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