ASTROSAT CZTI

Data Quality Report

Orbit 15593

Creation date: 2024-06-27T17:10:52.224540
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/AS1A04_037T02_9000002310_15593cztM0_level2.evt modeM0/AS1A04_037T02_9000002310_15593cztM0_level2_quad_clean.evt
Size (bytes)514,670,40076,596,480
Size490.8 MB 73.0 MB
Events in quadrant A3,708,264459,943
Events in quadrant B3,623,195467,172
Events in quadrant C3,539,242445,368
Events in quadrant D4,222,598440,764

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156882
B0153131
C0151431
D0173141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72641862.560573%
B72641602.202643%
C72641502.064978%
D72641972.712004%

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 7470 7265 2 2 0.03% 0.03%
B 7470 7265 5 5 0.07% 0.07%
C 7470 7266 7 7 0.09% 0.10%
D 7470 7266 113 113 1.51% 1.56%

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 0 253 249558 1375.48 891 870 180.8
A 13 248 15280 79.7 891 870 180.8
A 9 143 9013 45.04 891 870 180.8
B 0 189 33387 189.62 890 867 171.5
B 4 216 32997 187.34 890 867 171.5
B 12 111 19954 111.29 890 867 171.5
C 14 238 130767 644.18 854 857 201.7
C 3 233 46742 227.53 854 857 201.7
C 10 187 29710 143.07 854 857 201.7
D 4 95 593052 2778.86 870 843 213.1
D 12 110 88588 411.73 870 843 213.1
D 14 128 49324 227.49 870 843 213.1

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