ASTROSAT CZTI

Data Quality Report

Orbit 53509

Creation date: 2025-08-19T13:43:03.849384
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_002T07_9000006498_53509cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53509cztM0_level2_quad_clean.evt
Size (bytes)886,233,60061,842,240
Size845.2 MB 59.0 MB
Events in quadrant A12,626,363184,668
Events in quadrant B3,097,769609,957
Events in quadrant C12,660,445181,776
Events in quadrant D3,961,505481,167

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416141
B0132761
C04176014
D0160721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5934430172.480620%
B5935761.280539%
C5933412669.543233%
D59343616.083586%

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 6819 5934 3570 3570 52.35% 60.16%
B 6819 5935 9 9 0.13% 0.15%
C 6818 5933 3598 3598 52.77% 60.64%
D 6818 5934 325 325 4.77% 5.48%

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 9034688 90912.23 402 393 99.4
A 15 174 1060905 10671.95 402 393 99.4
A 3 63 831604 8364.49 402 393 99.4
B 10 254 139995 1032.59 629 607 135.0
B 10 28 117436 865.48 629 607 135.0
B 7 252 113330 835.06 629 607 135.0
C 7 64 9298057 94863.68 353 349 98.0
C 1 241 612614 6246.88 353 349 98.0
C 15 224 443329 4519.68 353 349 98.0
D 3 12 842726 5014.14 592 567 168.0
D 2 249 247790 1471.94 592 567 168.0
D 2 153 226902 1347.58 592 567 168.0

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