ASTROSAT CZTI

Data Quality Report

Orbit 10437

Creation date: 2024-06-27T15:59:15.256782
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/AS1A03_126T01_9000001512_10437cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10437cztM0_level2_quad_clean.evt
Size (bytes)366,632,64063,532,800
Size349.6 MB 60.6 MB
Events in quadrant A2,797,172330,698
Events in quadrant B2,472,692398,191
Events in quadrant C2,326,841433,256
Events in quadrant D3,186,982432,396

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264164
B0264157
C0264156
D0252144

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03614625067
B03111420882
C02668316619
D03153418706

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02410
B02611
C02612
D02610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3952491.239879%
B4580481.048035%
C4898270.551245%
D5216400.766871%

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 7578 5184 0 0 0.00% 0.00%
B 7578 5638 3 3 0.04% 0.05%
C 7578 5914 0 0 0.00% 0.00%
D 7578 5976 0 0 0.00% 0.00%

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 13 251 845692 8465.0 483 473 99.8
A 3 80 84031 836.85 483 473 99.8
A 8 5 8041 75.79 483 473 99.8
B 4 239 226077 2121.02 557 543 106.3
B 11 51 47849 444.89 557 543 106.3
B 4 81 17944 163.65 557 543 106.3
C 14 234 20287 143.63 591 595 137.1
C 13 61 4299 27.02 591 595 137.1
C 14 67 3487 21.09 591 595 137.1
D 8 195 341802 2255.32 625 609 151.3
D 1 20 334515 2207.15 625 609 151.3
D 1 52 64000 419.02 625 609 151.3

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