ASTROSAT CZTI

Data Quality Report

Orbit 20200607_A09_057T04_9000003712_level2

Creation date: 2025-12-12T16:20:11.918753
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/AS1A09_057T04_9000003712cztM0_level2.fits modeM0/AS1A09_057T04_9000003712cztM0_level2_quad_clean.evt
Size (bytes)1,292,509,440883,664,640
Size1.2 GB 842.7 MB
Events in quadrant A8,187,3224,727,382
Events in quadrant B7,787,6524,777,445
Events in quadrant C7,899,0784,500,564
Events in quadrant D6,601,5224,088,990

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02270
B02270
C02270
D02270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03018840
B02721680
C02688220
D04244080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025780
B025820
C025820
D025800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12634430552.418002%
B12644117401.376136%
C12643620651.633237%
D1264241270510.049516%

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 149735 126553 0 0 0.00% 0.00%
B 149735 126661 0 0 0.00% 0.00%
C 149735 126645 0 0 0.00% 0.00%
D 149735 126279 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 0 29 7877 11.49 2132 2009 510.6
A 7 110 6538 8.87 2132 2009 510.6
A 0 30 6217 8.24 2132 2009 510.6
B 2 9 6146 10.46 2060 1969 399.5
B 2 8 5205 8.1 2060 1969 399.5
B 3 80 5086 7.8 2060 1969 399.5
C 1 80 6165 7.98 2086 1957 527.1
C 1 81 6066 7.8 2086 1957 527.1
C 3 126 5419 6.57 2086 1957 527.1
D 10 189 4601 5.84 1889 1726 492.0
D 7 3 4590 5.82 1889 1726 492.0
D 6 231 4544 5.73 1889 1726 492.0

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