ASTROSAT CZTI

Data Quality Report

Orbit 20190316_A05_072T04_9000002802_level2

Creation date: 2019-03-18T12:59:55.259519
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/AS1A05_072T04_9000002802cztM0_level2_bc.evt modeM0/AS1A05_072T04_9000002802cztM0_level2_quad_clean.evt
Size (bytes)2,624,656,320969,304,320
Size2.4 GB 924.4 MB
Events in quadrant A17,646,2996,115,171
Events in quadrant B22,728,6156,160,222
Events in quadrant C15,672,6826,042,325
Events in quadrant D18,352,5055,923,693

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015260
B015260
C015260
D015260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01611760
B01812930
C01565490
D01644630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A746338591.150965%
B7463323753.182238%
C7463311111.488618%
D7463314271.912023%

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 86949 74638 4 4 0.00% 0.01%
B 86949 74635 162 162 0.19% 0.22%
C 86949 74635 1 1 0.00% 0.00%
D 86949 74633 104 104 0.12% 0.14%

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 15 192 1078547 1237.85 4018 3949 868.1
A 14 4 779080 892.89 4018 3949 868.1
A 15 191 125192 139.66 4018 3949 868.1
B 10 245 5568472 7449.81 4019 3928 746.9
B 7 220 555135 737.96 4019 3928 746.9
B 4 216 273790 361.29 4019 3928 746.9
C 3 233 599632 657.76 3883 3866 905.7
C 0 207 58999 60.87 3883 3866 905.7
C 0 239 34493 33.81 3883 3866 905.7
D 14 34 1318501 1453.2 3964 3829 904.7
D 13 168 575348 631.74 3964 3829 904.7
D 7 238 474680 520.47 3964 3829 904.7

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