ASTROSAT CZTI

Data Quality Report

Orbit 20210708_A10_073T02_9000004522_level2

Creation date: 2021-07-10T16:56:38.407042
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/AS1A10_073T02_9000004522cztM0_level2_bc.evt modeM0/AS1A10_073T02_9000004522cztM0_level2_quad_clean.evt
Size (bytes)5,235,773,7601,253,030,400
Size4.9 GB 1.2 GB
Events in quadrant A20,043,2378,274,940
Events in quadrant B47,597,8958,091,936
Events in quadrant C24,810,4887,862,508
Events in quadrant D59,862,4947,404,402

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018820
B018860
C018860
D018840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01929180
B02907370
C02140270
D03185240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A921918220.891627%
B9210432133.488448%
C9214129193.167971%
D9210783269.039487%

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 106005 92365 1 1 0.00% 0.00%
B 106005 92253 46 46 0.04% 0.05%
C 106005 92318 110 110 0.10% 0.12%
D 106005 92247 5033 5033 4.75% 5.46%

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 13 254 167481 147.47 5136 5062 1101.3
A 5 16 114073 98.98 5136 5062 1101.3
A 11 47 70079 59.03 5136 5062 1101.3
B 6 159 24532096 25541.53 5082 4963 960.3
B 0 190 1263028 1310.1 5082 4963 960.3
B 4 80 814282 842.79 5082 4963 960.3
C 3 233 2995421 2637.32 4855 4850 1133.9
C 0 10 1656362 1456.43 4855 4850 1133.9
C 2 16 714338 625.68 4855 4850 1133.9
D 8 195 37781283 31542.42 4809 4699 1197.6
D 2 250 1082324 899.79 4809 4699 1197.6
D 12 233 1038934 863.56 4809 4699 1197.6

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