ASTROSAT CZTI

Data Quality Report

Orbit 52912

Creation date: 2025-07-16T21:32:45.066563
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_9000006484_52912cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52912cztM0_level2_quad_clean.evt
Size (bytes)1,973,615,040128,266,560
Size1.8 GB 122.3 MB
Events in quadrant A33,756,9561,444
Events in quadrant B13,148,432922,657
Events in quadrant C9,745,3401,122,085
Events in quadrant D15,367,952907,639

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01089531
B0486231
C0385111
D0552051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134431343299.918173%
B13443410930.566094%
C134449677.192800%
D13443291621.691587%

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 13803 13444 12713 12713 92.10% 94.56%
B 13803 13443 1909 1909 13.83% 14.20%
C 13804 13445 647 647 4.69% 4.81%
D 13803 13444 2467 2467 17.87% 18.35%

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 9 191 31600315 362054.98 338 330 87.3
A 12 17 255527 2923.9 338 330 87.3
A 4 238 160702 1837.45 338 330 87.3
B 12 32 7623337 34953.63 1035 999 218.1
B 7 0 343204 1569.24 1035 999 218.1
B 10 44 216078 986.28 1035 999 218.1
C 15 224 1048247 2796.37 1359 1348 374.4
C 7 80 846946 2258.67 1359 1348 374.4
C 15 178 749026 1997.12 1359 1348 374.4
D 8 176 5179074 14463.01 1241 1186 358.0
D 15 125 1287207 3592.15 1241 1186 358.0
D 2 249 1205057 3362.68 1241 1186 358.0

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