ASTROSAT CZTI

Data Quality Report

Orbit 03901

Creation date: 2024-06-27T14:35:01.137932
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/AS1G05_083T02_9000000498_03901cztM0_level2.evt modeM0/AS1G05_083T02_9000000498_03901cztM0_level2_quad_clean.evt
Size (bytes)257,532,48055,889,280
Size245.6 MB 53.3 MB
Events in quadrant A1,928,720361,805
Events in quadrant B1,983,198360,829
Events in quadrant C1,659,079358,433
Events in quadrant D1,969,984344,161

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0851214
B0842222
C078893
D0877223

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37751143.019868%
B3771792.094935%
C3780501.322751%
D37711072.837444%

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 3991 3781 28 28 0.70% 0.74%
B 3991 3780 10 10 0.25% 0.26%
C 3991 3781 1 1 0.03% 0.03%
D 3990 3775 42 42 1.05% 1.11%

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 2 79 107950 1228.98 421 411 87.5
A 0 50 72869 828.07 421 411 87.5
A 0 118 59218 672.06 421 411 87.5
B 7 221 167465 2017.87 423 412 82.8
B 15 204 57948 694.99 423 412 82.8
B 10 16 43514 520.64 423 412 82.8
C 12 4 27633 277.39 415 415 98.1
C 7 222 6046 57.39 415 415 98.1
C 13 61 3597 32.43 415 415 98.1
D 10 246 257175 2575.16 412 400 99.7
D 4 95 31049 307.37 412 400 99.7
D 2 232 29892 295.77 412 400 99.7

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
Veto Counter