ASTROSAT CZTI

Data Quality Report

Orbit 36377

Creation date: 2022-06-20T23:42:39.403034
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/AS1A11_097T24_9000005196_36377cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36377cztM0_level2_quad_clean.evt
Size (bytes)512,095,68068,322,240
Size488.4 MB 65.2 MB
Events in quadrant A2,858,908476,369
Events in quadrant B3,796,795452,741
Events in quadrant C3,008,652459,150
Events in quadrant D5,506,448330,237

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115583
B0145132
C0118802
D0196742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4985250.501505%
B49853667.342026%
C4985781.564694%
D4985108521.765296%

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 7108 4986 17 17 0.24% 0.34%
B 7108 4986 304 304 4.28% 6.10%
C 7108 4986 57 57 0.80% 1.14%
D 7108 4986 1082 1082 15.22% 21.70%

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 10 83 179890 1369.89 654 644 130.8
A 7 16 97752 742.15 654 644 130.8
A 15 223 36387 273.17 654 644 130.8
B 5 172 962220 7954.22 634 620 120.9
B 5 255 151832 1250.8 634 620 120.9
B 4 171 119599 984.18 634 620 120.9
C 15 214 215657 1475.92 633 640 145.7
C 0 10 186680 1277.02 633 640 145.7
C 0 207 121596 830.27 633 640 145.7
D 12 6 2486836 19110.06 538 525 130.1
D 2 250 446466 3427.55 538 525 130.1
D 2 249 123699 946.73 538 525 130.1

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