ASTROSAT CZTI

Data Quality Report

Orbit 17591

Creation date: 2024-06-27T17:38:22.395156
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/AS1A05_056T01_9000002604_17591cztM0_level2.evt modeM0/AS1A05_056T01_9000002604_17591cztM0_level2_quad_clean.evt
Size (bytes)496,344,96096,318,720
Size473.4 MB 91.9 MB
Events in quadrant A3,579,109618,571
Events in quadrant B3,337,599623,232
Events in quadrant C4,368,739591,440
Events in quadrant D3,272,670597,830

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152412
B0144642
C0182062
D0145062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69731311.878675%
B69731121.606195%
C69731562.237201%
D6973570.817439%

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 7208 6975 39 39 0.54% 0.56%
B 7208 6975 1 1 0.01% 0.01%
C 7208 6975 0 0 0.00% 0.00%
D 7208 6975 2 2 0.03% 0.03%

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 14 237 317247 1838.04 849 832 172.1
A 0 226 7290 37.51 849 832 172.1
A 3 137 6714 34.17 849 832 172.1
B 12 111 20051 116.82 845 822 164.6
B 11 111 17617 102.03 845 822 164.6
B 14 111 14936 85.75 845 822 164.6
C 3 233 1050519 5544.57 805 809 189.3
C 14 238 122019 640.23 805 809 189.3
C 5 218 52725 274.22 805 809 189.3
D 13 189 94070 461.46 824 797 202.1
D 10 172 32110 154.92 824 797 202.1
D 2 234 24387 116.71 824 797 202.1

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