ASTROSAT CZTI

Data Quality Report

Orbit 50801

Creation date: 2025-02-18T05:06:30.624908
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_50801cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50801cztM0_level2_quad_clean.evt
Size (bytes)919,563,84089,222,400
Size877.0 MB 85.1 MB
Events in quadrant A8,843,944509,179
Events in quadrant B4,143,728729,322
Events in quadrant C13,101,973412,342
Events in quadrant D7,389,793545,698

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312443
B0174403
C0439853
D0270113

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7252207228.571429%
B72522773.819636%
C7252310042.746828%
D7252101614.009928%

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 7767 7254 1782 1782 22.94% 24.57%
B 7767 7253 165 165 2.12% 2.27%
C 7767 7252 3253 3253 41.88% 44.86%
D 7767 7254 928 928 11.95% 12.79%

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 14 254 4985881 30686.67 645 628 162.5
A 14 238 471174 2896.44 645 628 162.5
A 4 3 193781 1188.95 645 628 162.5
B 8 128 395321 2454.46 758 732 160.8
B 6 51 244860 1518.55 758 732 160.8
B 10 247 158359 980.49 758 732 160.8
C 5 10 9034432 49827.49 654 648 181.3
C 13 3 278737 1533.85 654 648 181.3
C 1 93 112668 617.86 654 648 181.3
D 2 249 1227127 6224.61 706 682 197.0
D 10 172 1054739 5349.68 706 682 197.0
D 2 216 697542 3536.79 706 682 197.0

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