ASTROSAT CZTI

Data Quality Report

Orbit 00958

Creation date: 2024-06-27T14:05:18.995992
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/AS1P01_998T01_9000000188_00958cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00958cztM0_level2_quad_clean.evt
Size (bytes)1,180,811,520106,790,400
Size1.1 GB 101.8 MB
Events in quadrant A8,416,098701,516
Events in quadrant B8,802,933700,188
Events in quadrant C9,581,200677,444
Events in quadrant D8,500,371670,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299550
B0310740
C0334130
D0301960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6961280.402241%
B6961350.502801%
C6961240.344778%
D6960941.350575%

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 7601 6962 376 376 4.95% 5.40%
B 7601 6962 365 365 4.80% 5.24%
C 7601 6962 475 475 6.25% 6.82%
D 7600 6961 529 529 6.96% 7.60%

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 14 170 209384 407.47 2122 2133 508.6
A 15 233 59631 113.04 2122 2133 508.6
A 0 253 7884 11.31 2122 2133 508.6
B 0 220 54520 100.34 2228 2235 521.1
B 8 234 50294 92.23 2228 2235 521.1
B 3 32 46394 84.74 2228 2235 521.1
C 10 34 697223 1204.97 2075 2147 576.8
C 15 241 318676 548.73 2075 2147 576.8
C 9 144 174850 299.39 2075 2147 576.8
D 1 4 638899 1039.01 1989 2057 612.9
D 7 222 137792 221.45 1989 2057 612.9
D 13 252 131961 211.94 1989 2057 612.9

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