ASTROSAT CZTI

Data Quality Report

Orbit 54156

Creation date: 2025-10-02T02:10:02.148535
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/AS1A14_012T01_9000006512_54156cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54156cztM0_level2_quad_clean.evt
Size (bytes)604,964,16092,658,240
Size576.9 MB 88.4 MB
Events in quadrant A6,862,970533,406
Events in quadrant B3,694,009685,263
Events in quadrant C4,393,865611,656
Events in quadrant D6,911,602498,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252356
B0160812
C0181512
D0254942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6842138820.286466%
B68422403.507746%
C68433445.027035%
D6843122017.828438%

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 7346 6843 1069 1069 14.55% 15.62%
B 7347 6844 71 71 0.97% 1.04%
C 7347 6844 204 204 2.78% 2.98%
D 7347 6844 1079 1079 14.69% 15.77%

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 7 29 3624028 22812.32 641 625 158.8
A 3 14 293322 1842.77 641 625 158.8
A 4 249 94949 593.85 641 625 158.8
B 4 171 269144 1790.54 708 683 149.9
B 5 236 237126 1576.99 708 683 149.9
B 4 81 99796 661.05 708 683 149.9
C 9 38 1038295 5400.69 700 691 192.1
C 0 209 181745 942.38 700 691 192.1
C 9 237 140719 728.84 700 691 192.1
D 8 176 1964625 10697.38 651 622 183.6
D 3 12 1657066 9022.19 651 622 183.6
D 2 62 433146 2355.84 651 622 183.6

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