ASTROSAT CZTI

Data Quality Report

Orbit 20191110_A07_018T08_9000003296_level2

Creation date: 2025-12-05T18:25:02.068126
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/AS1A07_018T08_9000003296cztM0_level2.fits modeM0/AS1A07_018T08_9000003296cztM0_level2_quad_clean.evt
Size (bytes)1,131,140,160998,409,600
Size1.1 GB 952.2 MB
Events in quadrant A7,125,4205,968,759
Events in quadrant B6,844,6366,027,637
Events in quadrant C6,813,2085,602,569
Events in quadrant D5,880,5585,043,707

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02050
B02060
C02060
D02060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02308880
B02359570
C02349810
D02832210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022560
B022560
C022560
D022560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11079213511.219402%
B11079317861.612015%
C11079320531.853005%
D11079343663.940682%

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 141864 110791 0 0 0.00% 0.00%
B 141865 110792 0 0 0.00% 0.00%
C 141865 110794 0 0 0.00% 0.00%
D 141865 110737 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 6778 11.05 1856 1740 455.9
A 7 110 5608 8.49 1856 1740 455.9
A 0 30 5258 7.72 1856 1740 455.9
B 2 9 5366 10.37 1809 1731 350.6
B 2 8 4600 8.18 1809 1731 350.6
B 5 225 4363 7.51 1809 1731 350.6
C 12 241 4756 6.69 1798 1682 459.3
C 3 234 4728 6.63 1798 1682 459.3
C 3 126 4590 6.33 1798 1682 459.3
D 3 14 4215 6.1 1675 1525 441.0
D 15 46 4190 6.04 1675 1525 441.0
D 6 231 4127 5.9 1675 1525 441.0

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