ASTROSAT CZTI

Data Quality Report

Orbit 49771

Creation date: 2024-12-10T19:38:21.044503
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/AS1A13_037T01_9000006440_49771cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49771cztM0_level2_quad_clean.evt
Size (bytes)1,388,162,88053,559,360
Size1.3 GB 51.1 MB
Events in quadrant A14,022,613310,667
Events in quadrant B4,649,434725,370
Events in quadrant C15,067,75259,740
Events in quadrant D17,090,74024,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0466530
B0187080
C0496291
D0556160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7201417257.936398%
B72022373.290753%
C7201660891.765033%
D7201697396.833773%

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 7201 7200 3841 3841 53.34% 53.35%
B 7202 7202 136 136 1.89% 1.89%
C 7201 7201 4372 4372 60.71% 60.71%
D 7200 7200 5642 5642 78.36% 78.36%

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 98 3356935 21811.75 570 554 153.9
A 12 50 2272634 14765.32 570 554 153.9
A 3 99 1272683 8267.05 570 554 153.9
B 0 200 208958 1227.67 778 752 169.6
B 10 28 148230 869.59 778 752 169.6
B 4 21 125297 734.37 778 752 169.6
C 15 174 2775834 36349.73 227 224 76.4
C 15 197 2572980 33693.13 227 224 76.4
C 15 196 1576860 20647.82 227 224 76.4
D 15 142 4086917 53312.26 196 186 76.7
D 8 129 4021558 52459.64 196 186 76.7
D 15 168 2329598 30387.67 196 186 76.7

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