ASTROSAT CZTI

Data Quality Report

Orbit 53595

Creation date: 2025-08-25T09:39:01.883786
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_004T05_9000006502_53595cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53595cztM0_level2_quad_clean.evt
Size (bytes)2,463,949,440140,785,920
Size2.3 GB 134.3 MB
Events in quadrant A23,863,913896,179
Events in quadrant B15,729,2431,210,462
Events in quadrant C25,302,911502,392
Events in quadrant D25,122,730585,519

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0815774
B05740511
C0858984
D0854824

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15441613439.725406%
B15440306819.870466%
C154401019366.016839%
D15441853555.274917%

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 16065 15441 4878 4878 30.36% 31.59%
B 16065 15442 2258 2258 14.06% 14.62%
C 16065 15440 5834 5834 36.31% 37.78%
D 16066 15441 6349 6349 39.52% 41.12%

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 3 62 15477651 44321.73 1400 1362 349.2
A 3 63 726411 2076.43 1400 1362 349.2
A 15 174 559563 1598.6 1400 1362 349.2
B 4 81 3362458 10553.05 1502 1449 318.5
B 5 172 2079893 6526.0 1502 1449 318.5
B 4 206 1985740 6230.37 1502 1449 318.5
C 15 164 11304443 46437.02 877 868 243.4
C 15 224 5452492 22396.2 877 868 243.4
C 1 241 1765340 7248.75 877 868 243.4
D 8 176 17849043 66562.33 926 885 268.1
D 13 21 780734 2908.34 926 885 268.1
D 7 70 569670 2121.21 926 885 268.1

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