ASTROSAT CZTI

Data Quality Report

Orbit 20161107_A02_006T01_9000000776_level2

Creation date: 2021-08-24T18:45:35.724154
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/AS1A02_006T01_9000000776cztM0_level2_bc.evt modeM0/AS1A02_006T01_9000000776cztM0_level2_quad_clean.evt
Size (bytes)2,340,774,720852,998,400
Size2.2 GB 813.5 MB
Events in quadrant A21,577,2135,298,346
Events in quadrant B16,773,1945,446,873
Events in quadrant C13,948,7295,282,355
Events in quadrant D13,931,5005,123,253

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01060
C01080
D01060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013920
B014060
C013900
D013890

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01636290
B01509710
C01429700
D01435670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6810512931.898539%
B6826915622.288008%
C6827611021.614037%
D684528721.273885%

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 80759 69691 19 19 0.02% 0.03%
B 80759 69727 81 81 0.10% 0.12%
C 80759 69671 140 140 0.17% 0.20%
D 80759 69814 10 10 0.01% 0.01%

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 13 34 8028987 11161.68 3252 3176 719.1
A 15 234 407903 562.86 3252 3176 719.1
A 15 236 241629 331.62 3252 3176 719.1
B 3 64 1876641 2920.33 3338 3231 641.5
B 15 204 1345869 2092.95 3338 3231 641.5
B 0 219 167253 255.68 3338 3231 641.5
C 1 241 1044683 1443.12 3239 3178 721.7
C 1 16 62095 81.64 3239 3178 721.7
C 9 54 40941 52.32 3239 3178 721.7
D 12 6 525667 688.02 3251 3118 759.5
D 5 97 163580 211.27 3251 3118 759.5
D 8 195 162075 209.29 3251 3118 759.5

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