ASTROSAT CZTI

Data Quality Report

Orbit 20220702_A11_049T02_9000005220_level2

Creation date: 2026-01-03T14:43:49.092174
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_049T02_9000005220cztM0_level2.fits modeM0/AS1A11_049T02_9000005220cztM0_level2_quad_clean.evt
Size (bytes)474,621,120437,103,360
Size452.6 MB 416.9 MB
Events in quadrant A2,929,9622,628,353
Events in quadrant B2,764,2982,531,085
Events in quadrant C2,829,7382,458,394
Events in quadrant D2,456,2602,225,877

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01098730
B01197550
C01098720
D01292310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010120
B010120
C010120
D010120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494386051.223755%
B4943813922.815648%
C494387971.612120%
D4943814863.005785%

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 67449 49433 0 0 0.00% 0.00%
B 67449 49431 0 0 0.00% 0.00%
C 67449 49420 0 0 0.00% 0.00%
D 67449 49375 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 7 110 2392 8.72 766 723 191.3
A 9 19 2329 8.39 766 723 191.3
A 0 29 2272 8.1 766 723 191.3
B 2 9 2405 11.9 731 700 143.3
B 3 80 2167 10.24 731 700 143.3
B 2 8 1982 8.95 731 700 143.3
C 1 81 2309 8.44 748 704 190.1
C 3 202 2299 8.39 748 704 190.1
C 3 203 2275 8.26 748 704 190.1
D 10 189 1852 6.49 704 645 185.9
D 7 3 1801 6.22 704 645 185.9
D 10 113 1759 5.99 704 645 185.9

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