ASTROSAT CZTI

Data Quality Report

Orbit 15660

Creation date: 2024-06-27T17:11:45.855919
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_084T01_9000002318_15660cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15660cztM0_level2_quad_clean.evt
Size (bytes)450,610,56070,009,920
Size429.7 MB 66.8 MB
Events in quadrant A3,172,357422,838
Events in quadrant B3,402,888428,150
Events in quadrant C3,312,326421,975
Events in quadrant D3,331,751407,587

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131503
B0138712
C0135502
D0138142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6291440.699412%
B6291600.953743%
C6291831.319345%
D6291651.033222%

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 7591 6291 0 0 0.00% 0.00%
B 7591 6291 13 13 0.17% 0.21%
C 7591 6291 0 0 0.00% 0.00%
D 7591 6291 33 33 0.43% 0.52%

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 0 226 7292 39.45 824 809 164.3
A 12 194 6027 31.75 824 809 164.3
A 3 137 5206 26.76 824 809 164.3
B 3 64 109375 712.5 828 810 152.4
B 0 189 30560 195.25 828 810 152.4
B 12 111 16960 105.99 828 810 152.4
C 14 238 125879 676.62 806 813 184.8
C 3 233 27919 146.64 806 813 184.8
C 5 96 7619 36.82 806 813 184.8
D 1 52 186388 956.04 807 786 194.1
D 10 70 37239 187.77 807 786 194.1
D 2 234 23847 118.79 807 786 194.1

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