ASTROSAT CZTI

Data Quality Report

Orbit 55423

Creation date: 2025-12-26T09:27:06.920563
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_099T01_9000006536_55423cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55423cztM0_level2_quad_clean.evt
Size (bytes)802,549,44095,279,040
Size765.4 MB 90.9 MB
Events in quadrant A4,312,196674,946
Events in quadrant B4,232,945738,371
Events in quadrant C4,210,220656,824
Events in quadrant D16,294,486226,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192060
B0189620
C0189170
D0542500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84661281.511930%
B84671001.181056%
C84671101.299161%
D8467546364.521082%

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 8734 8734 77 77 0.88% 0.88%
B 8735 8735 47 47 0.54% 0.54%
C 8735 8735 80 80 0.92% 0.92%
D 8735 8674 4636 4636 53.07% 53.45%

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 396185 1793.54 881 856 220.4
A 0 8 188983 853.5 881 856 220.4
A 6 162 78594 352.68 881 856 220.4
B 7 252 367735 1971.14 876 843 186.1
B 5 236 158021 844.44 876 843 186.1
B 10 247 87344 464.73 876 843 186.1
C 13 3 560375 2365.76 868 860 236.5
C 3 248 59218 246.75 868 860 236.5
C 12 252 52855 219.85 868 860 236.5
D 11 129 13602499 93795.84 504 482 145.0
D 8 160 132696 911.71 504 482 145.0
D 3 12 92979 637.83 504 482 145.0

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