ASTROSAT CZTI

Data Quality Report

Orbit 51954

Creation date: 2025-05-06T22:00:02.832548
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/AS1C09_011T06_9000006468_51954cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_51954cztM0_level2_quad_clean.evt
Size (bytes)2,550,775,680198,017,280
Size2.4 GB 188.8 MB
Events in quadrant A28,102,285973,923
Events in quadrant B10,776,1171,770,315
Events in quadrant C25,116,6401,048,999
Events in quadrant D29,017,817938,027

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960423
B0447103
C0872773
D0989503

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18310774442.293829%
B183115352.921741%
C18311630134.411010%
D18311712038.883731%

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 19490 18313 5961 5961 30.58% 32.55%
B 19491 18315 149 149 0.76% 0.81%
C 19491 18315 4731 4731 24.27% 25.83%
D 19491 18315 6298 6298 32.31% 34.39%

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 4 159 11063857 29039.39 1529 1490 380.9
A 7 64 6677748 17525.58 1529 1490 380.9
A 4 249 1399193 3669.06 1529 1490 380.9
B 4 81 315153 782.83 1903 1841 400.2
B 0 216 287875 714.67 1903 1841 400.2
B 4 171 257613 639.06 1903 1841 400.2
C 15 224 12645466 29068.02 1563 1544 435.0
C 14 245 3483284 8004.42 1563 1544 435.0
C 4 5 742250 1702.86 1563 1544 435.0
D 2 172 7144236 15962.71 1578 1509 447.5
D 6 42 7047920 15747.46 1578 1509 447.5
D 7 60 2723376 6082.88 1578 1509 447.5

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