ASTROSAT CZTI

Data Quality Report

Orbit 36492

Creation date: 2022-06-28T17:36:09.602246
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_049T04_9000005210_36492cztM0_level2.evt modeM0/AS1A11_049T04_9000005210_36492cztM0_level2_quad_clean.evt
Size (bytes)482,558,40097,752,960
Size460.2 MB 93.2 MB
Events in quadrant A2,784,245679,040
Events in quadrant B3,148,501671,603
Events in quadrant C2,989,595657,484
Events in quadrant D5,349,050597,560

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113433
B0124512
C0119602
D0193912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5056150.296677%
B50561212.393196%
C50561232.432753%
D505669613.765823%

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 7089 5057 4 4 0.06% 0.08%
B 7089 5057 83 83 1.17% 1.64%
C 7089 5057 64 64 0.90% 1.27%
D 7089 5057 620 620 8.75% 12.26%

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 194809 1514.85 655 645 128.2
A 7 16 27715 211.2 655 645 128.2
A 13 6 16394 122.87 655 645 128.2
B 5 172 489636 4039.13 636 622 121.1
B 5 255 43068 350.59 636 622 121.1
B 0 214 28882 233.42 636 622 121.1
C 0 10 354772 2510.47 616 622 141.1
C 15 214 218806 1546.64 616 622 141.1
C 0 207 10753 71.82 616 622 141.1
D 12 227 2245096 15169.47 609 593 148.0
D 2 250 257601 1736.99 609 593 148.0
D 13 249 253090 1706.5 609 593 148.0

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