ASTROSAT CZTI

Data Quality Report

Orbit 20231017_A05_174T01_9000005880_level2

Creation date: 2023-10-21T14:46:26.005659
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_174T01_9000005880cztM0_level2.fits modeM0/AS1A05_174T01_9000005880cztM0_level2_quad_clean.evt
Size (bytes)1,026,711,360976,069,440
Size979.1 MB 930.9 MB
Events in quadrant A7,875,3728,353,102
Events in quadrant B8,022,6609,119,894
Events in quadrant C3,360,6701,400,521
Events in quadrant D1,003,1081,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06322550
B04273360
C012214300
D010822110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031700
B031680
C031700
D031700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1558182209714.181288%
B15583166364.258459%
C15582313355385.708143%
D15581515546699.776016%

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 196120 155737 0 0 0.00% 0.00%
B 196120 155793 0 0 0.00% 0.00%
C 196120 138240 0 0 0.00% 0.00%
D 196120 126034 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 6909 9.74 2067 1930 511.0
A 0 29 6371 8.69 2067 1930 511.0
A 0 30 6184 8.32 2067 1930 511.0
B 2 9 7050 12.07 2127 2023 416.4
B 3 17 5801 9.07 2127 2023 416.4
B 5 232 5700 8.83 2127 2023 416.4
C 1 81 2704 8.22 896 837 227.1
C 3 203 2640 7.94 896 837 227.1
C 1 80 2640 7.94 896 837 227.1
D 6 38 778 6.21 294 266 82.5
D 7 3 751 5.88 294 266 82.5
D 3 159 746 5.82 294 266 82.5

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