ASTROSAT CZTI

Data Quality Report

Orbit 20190410_T03_098T01_9000002836_level2

Creation date: 2025-11-29T05:03:24.609562
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/AS1T03_098T01_9000002836cztM0_level2.fits modeM0/AS1T03_098T01_9000002836cztM0_level2_quad_clean.evt
Size (bytes)1,133,426,8801,158,022,080
Size1.1 GB 1.1 GB
Events in quadrant A6,929,3606,994,855
Events in quadrant B6,643,4687,013,614
Events in quadrant C6,867,4686,834,739
Events in quadrant D5,699,6966,048,834

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01690
B01690
C01690
D01690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02468750
B02690830
C02555230
D03650210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024280
B024280
C024280
D024280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11938414581.221269%
B11938431092.604202%
C11938422491.883837%
D119384103418.661965%

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 136240 119381 0 0 0.00% 0.00%
B 136240 119373 0 0 0.00% 0.00%
C 136240 119377 0 0 0.00% 0.00%
D 136240 119158 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 6736 11.51 1800 1685 439.0
A 7 110 5574 8.86 1800 1685 439.0
A 0 30 5193 7.99 1800 1685 439.0
B 2 9 5619 11.47 1757 1671 344.2
B 2 8 4572 8.43 1757 1671 344.2
B 5 128 4346 7.77 1757 1671 344.2
C 1 80 5370 7.98 1811 1692 460.9
C 1 81 5286 7.8 1811 1692 460.9
C 12 241 4749 6.63 1811 1692 460.9
D 10 190 4413 6.77 1628 1482 432.7
D 3 14 4125 6.11 1628 1482 432.7
D 10 189 4077 6.0 1628 1482 432.7

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter