ASTROSAT CZTI

Data Quality Report

Orbit 50785

Creation date: 2025-02-17T03:04:29.852408
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/AS1C07_001T01_9000006450_50785cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50785cztM0_level2_quad_clean.evt
Size (bytes)649,952,64087,652,800
Size619.8 MB 83.6 MB
Events in quadrant A3,535,185603,969
Events in quadrant B3,601,613654,521
Events in quadrant C8,018,599521,805
Events in quadrant D8,414,759432,350

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148791
B0151581
C0282864
D0293021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63161472.327422%
B63172003.166060%
C631695115.056998%
D6316159725.284991%

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 7326 6317 60 60 0.82% 0.95%
B 7327 6318 64 64 0.87% 1.01%
C 7326 6317 890 890 12.15% 14.09%
D 7326 6317 1529 1529 20.87% 24.20%

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 12 80 195567 1158.34 672 655 168.3
A 10 253 187550 1110.7 672 655 168.3
A 5 240 119264 704.88 672 655 168.3
B 4 206 234624 1647.77 673 650 142.0
B 4 170 144018 1009.67 673 650 142.0
B 10 246 120335 842.88 673 650 142.0
C 5 10 4257050 24561.18 635 628 173.3
C 13 3 239601 1378.97 635 628 173.3
C 4 5 219492 1262.93 635 628 173.3
D 8 176 2708734 16169.94 605 582 167.5
D 2 216 938911 5602.61 605 582 167.5
D 15 174 859996 5131.42 605 582 167.5

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