ASTROSAT CZTI

Data Quality Report

Orbit 15548

Creation date: 2024-06-27T17:10:10.762967
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/AS1G08_030T01_9000002302_15548cztM0_level2.evt modeM0/AS1G08_030T01_9000002302_15548cztM0_level2_quad_clean.evt
Size (bytes)505,972,80099,642,240
Size482.5 MB 95.0 MB
Events in quadrant A3,397,184652,726
Events in quadrant B3,944,547649,521
Events in quadrant C3,459,413617,530
Events in quadrant D4,047,680611,109

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144463
B0160752
C0144952
D0164782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69871131.617289%
B69872493.563761%
C69871602.289967%
D69871712.447402%

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 7753 6988 0 0 0.00% 0.00%
B 7753 6988 67 67 0.86% 0.96%
C 7753 6988 0 0 0.00% 0.00%
D 7753 6988 53 53 0.68% 0.76%

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 9 143 8891 45.27 880 862 177.4
A 0 226 8147 41.07 880 862 177.4
A 12 194 6523 31.92 880 862 177.4
B 3 64 445160 2726.4 865 843 163.0
B 4 48 59052 357.18 865 843 163.0
B 12 111 19409 113.92 865 843 163.0
C 14 238 130620 664.28 837 840 195.4
C 3 233 51524 259.43 837 840 195.4
C 0 207 8387 38.63 837 840 195.4
D 1 52 527681 2381.5 846 828 221.2
D 5 222 179712 808.6 846 828 221.2
D 7 223 34309 151.34 846 828 221.2

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