ASTROSAT CZTI

Data Quality Report

Orbit 20210109_A10_102T03_9000004106_level2

Creation date: 2021-01-11T13:43:31.763939
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_102T03_9000004106cztM0_level2_bc.evt modeM0/AS1A10_102T03_9000004106cztM0_level2_quad_clean.evt
Size (bytes)3,560,253,1201,112,374,080
Size3.3 GB 1.0 GB
Events in quadrant A22,460,5726,978,690
Events in quadrant B20,266,3907,168,692
Events in quadrant C18,815,5596,927,284
Events in quadrant D40,398,7406,695,167

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01984930
B01885090
C01849450
D02573650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017640
B017640
C017640
D017640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8639623572.728136%
B8639613821.599611%
C8639616031.855410%
D8639648925.662299%

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 99551 86385 53 53 0.05% 0.06%
B 99551 86385 13 13 0.01% 0.02%
C 99551 86384 5 5 0.01% 0.01%
D 99551 86386 872 872 0.88% 1.01%

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 15 174 3409217 3345.26 4743 4667 1017.7
A 12 16 429742 417.67 4743 4667 1017.7
A 13 254 138386 131.39 4743 4667 1017.7
B 4 171 642530 715.5 4799 4682 891.5
B 10 245 235261 258.65 4799 4682 891.5
B 15 33 214766 235.66 4799 4682 891.5
C 7 247 583926 539.69 4628 4624 1073.4
C 0 207 186654 169.58 4628 4624 1073.4
C 15 208 94265 83.51 4628 4624 1073.4
D 1 52 13073333 12380.3 4630 4491 1055.6
D 8 195 6185187 5855.06 4630 4491 1055.6
D 7 80 1895148 1791.05 4630 4491 1055.6

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