ASTROSAT CZTI

Data Quality Report

Orbit 20201005_T03_245T01_9000003916_level2

Creation date: 2021-01-07T19:57:04.361283
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/AS1T03_245T01_9000003916cztM0_level2_bc.evt modeM0/AS1T03_245T01_9000003916cztM0_level2_quad_clean.evt
Size (bytes)5,267,134,0801,707,603,840
Size4.9 GB 1.6 GB
Events in quadrant A34,385,47811,000,278
Events in quadrant B31,949,34511,214,277
Events in quadrant C26,115,32710,740,368
Events in quadrant D58,425,24710,065,479

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02885970
B02848420
C02658690
D03794490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025880
B025880
C025880
D025880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12698830252.382115%
B12698823291.834032%
C12698820961.650550%
D12698887886.920339%

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 148667 126993 767 767 0.52% 0.60%
B 148667 126994 24 24 0.02% 0.02%
C 148667 126995 2 2 0.00% 0.00%
D 148667 126985 1693 1693 1.14% 1.33%

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 6 16 4954279 3280.83 6991 6876 1508.0
A 0 13 1006759 663.07 6991 6876 1508.0
A 14 235 588059 385.41 6991 6876 1508.0
B 15 33 1453196 1089.97 7072 6901 1326.9
B 3 112 1097709 822.07 7072 6901 1326.9
B 5 172 538960 400.98 7072 6901 1326.9
C 15 208 261930 162.67 6690 6663 1569.2
C 2 16 58016 32.72 6690 6663 1569.2
C 4 224 38910 20.55 6690 6663 1569.2
D 1 52 22165716 13429.06 6551 6383 1650.1
D 7 38 4092067 2476.02 6551 6383 1650.1
D 2 250 2615803 1581.37 6551 6383 1650.1

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