ASTROSAT CZTI

Data Quality Report

Orbit 20230211_A12_032T03_9000005502_level2

Creation date: 2023-02-14T16:34:09.774949
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/AS1A12_032T03_9000005502cztM0_level2.fits modeM0/AS1A12_032T03_9000005502cztM0_level2_quad_clean.evt
Size (bytes)599,322,240653,221,440
Size571.6 MB 623.0 MB
Events in quadrant A3,534,8703,949,639
Events in quadrant B3,414,8543,977,380
Events in quadrant C3,573,4263,841,291
Events in quadrant D3,022,0563,412,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013640
B013640
C013640
D013640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01643300
B01590890
C01425850
D01902930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6714621303.172192%
B6714610281.530992%
C671463250.484020%
D6714637155.532720%

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 92297 67047 0 0 0.00% 0.00%
B 92297 67145 0 0 0.00% 0.00%
C 92297 67145 0 0 0.00% 0.00%
D 92297 67040 0 0 0.00% 0.00%

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 7 110 2953 9.17 925 868 227.4
A 0 29 2860 8.76 925 868 227.4
A 9 19 2785 8.43 925 868 227.4
B 2 9 2979 12.13 906 867 174.1
B 3 17 2450 9.09 906 867 174.1
B 3 80 2442 9.05 906 867 174.1
C 1 81 2952 8.54 946 886 241.9
C 1 80 2917 8.39 946 886 241.9
C 3 203 2861 8.16 946 886 241.9
D 10 189 2206 6.17 866 789 229.7
D 4 160 2195 6.12 866 789 229.7
D 7 3 2182 6.06 866 789 229.7

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