ASTROSAT CZTI

Data Quality Report

Orbit 20210702_C06_002T01_9000004500_level2

Creation date: 2025-12-27T08:28:53.662185
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/AS1C06_002T01_9000004500cztM0_level2.fits modeM0/AS1C06_002T01_9000004500cztM0_level2_quad_clean.evt
Size (bytes)493,810,560405,933,120
Size470.9 MB 387.1 MB
Events in quadrant A3,150,4422,407,973
Events in quadrant B2,886,4502,317,270
Events in quadrant C3,014,5482,268,393
Events in quadrant D2,513,8681,910,941

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01042080
B01555810
C01106400
D01958590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010060
B010060
C010060
D010060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493535081.029319%
B4935313202.674609%
C4935315303.100115%
D49353607412.307256%

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 58188 49353 0 0 0.00% 0.00%
B 58188 49353 0 0 0.00% 0.00%
C 58188 49324 0 0 0.00% 0.00%
D 58188 49339 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 0 29 3028 11.29 821 779 199.2
A 7 110 2459 8.44 821 779 199.2
A 9 19 2416 8.22 821 779 199.2
B 2 9 2277 10.41 767 738 147.9
B 3 17 1943 8.15 767 738 147.9
B 5 128 1936 8.1 767 738 147.9
C 12 241 2134 6.84 800 756 201.5
C 3 187 2078 6.56 800 756 201.5
C 3 126 2063 6.49 800 756 201.5
D 15 46 1939 6.65 721 662 192.1
D 10 189 1875 6.31 721 662 192.1
D 6 231 1849 6.18 721 662 192.1

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