ASTROSAT CZTI

Data Quality Report

Orbit 15000

Creation date: 2024-06-27T17:02:22.208131
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/AS1T02_056T01_9000002210_15000cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_15000cztM0_level2_quad_clean.evt
Size (bytes)521,951,04096,638,400
Size497.8 MB 92.2 MB
Events in quadrant A3,974,070615,339
Events in quadrant B4,258,241618,998
Events in quadrant C3,480,298608,360
Events in quadrant D3,615,113591,739

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163842
B0171851
C0147921
D0156381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70691381.952186%
B70693164.470222%
C7069831.174141%
D70691432.022917%

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 7325 7068 1 1 0.01% 0.01%
B 7325 7069 153 153 2.09% 2.16%
C 7325 7069 3 3 0.04% 0.04%
D 7325 7069 63 63 0.86% 0.89%

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 1 162 236550 1352.49 854 834 174.3
A 12 189 152396 869.63 854 834 174.3
A 1 178 109797 625.21 854 834 174.3
B 3 64 531314 3285.21 838 815 161.5
B 0 229 140166 862.96 838 815 161.5
B 10 16 64451 394.08 838 815 161.5
C 3 233 225805 1168.62 827 830 192.5
C 10 22 23171 116.05 827 830 192.5
C 13 61 6150 27.63 827 830 192.5
D 7 38 319110 1501.42 829 807 212.0
D 10 70 37407 172.64 829 807 212.0
D 2 234 35023 161.4 829 807 212.0

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