ASTROSAT CZTI

Data Quality Report

Orbit 55044

Creation date: 2025-12-02T15:29:45.702919
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_025T01_9000006530_55044cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55044cztM0_level2_quad_clean.evt
Size (bytes)28,198,0804,633,920
Size26.9 MB 4.4 MB
Events in quadrant A186,48027,983
Events in quadrant B162,62136,293
Events in quadrant C172,46829,331
Events in quadrant D491,16013,978

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025621752
B018091042
C018951102
D058944230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01911
B01812
C0199
D01911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139751057233960139749645877294
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A35651.404494%
B38100.000000%
C37510.266667%
D30010735.666667%

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 36971 415 1 1 0.00% 0.24%
B 36972 437 0 0 0.00% 0.00%
C 36959 436 1 1 0.00% 0.23%
D 36939 327 92 92 0.25% 28.13%

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 15 32 27005 2436.7 37 36 11.1
A 0 8 10498 945.26 37 36 11.1
A 4 3 1162 101.74 37 36 11.1
B 0 182 3042 284.81 40 39 10.5
B 12 111 1094 100.06 40 39 10.5
B 11 111 1032 94.18 40 39 10.5
C 12 252 12165 993.22 38 37 12.2
C 13 3 6755 550.17 38 37 12.2
C 14 254 880 69.04 38 37 12.2
D 11 129 295207 33697.18 25 24 8.8
D 15 94 78566 8966.11 25 24 8.8
D 6 239 8759 997.16 25 24 8.8

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