ASTROSAT CZTI

Data Quality Report

Orbit 20191202_C05_001T01_9000003354_level2

Creation date: 2025-12-06T13:59:29.788737
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/AS1C05_001T01_9000003354cztM0_level2.fits modeM0/AS1C05_001T01_9000003354cztM0_level2_quad_clean.evt
Size (bytes)534,337,920619,073,280
Size509.6 MB 590.4 MB
Events in quadrant A3,337,4183,973,217
Events in quadrant B3,166,8263,945,897
Events in quadrant C3,194,5123,718,846
Events in quadrant D2,790,1303,418,749

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011000
B011000
C011000
D011000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120550
B01222300
C01134230
D01333440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A538275531.027365%
B5382710561.961841%
C538278421.564271%
D5382716563.076523%

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 64698 53827 0 0 0.00% 0.00%
B 64698 53827 0 0 0.00% 0.00%
C 64698 53826 0 0 0.00% 0.00%
D 64698 53820 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 3090 10.65 871 825 212.7
A 7 110 2656 8.61 871 825 212.7
A 9 19 2454 7.66 871 825 212.7
B 2 9 2444 10.05 840 806 163.0
B 5 128 2090 7.88 840 806 163.0
B 14 254 2086 7.85 840 806 163.0
C 12 241 2160 6.34 845 794 215.5
C 7 111 2120 6.15 845 794 215.5
C 3 187 2113 6.12 845 794 215.5
D 3 14 1991 5.99 796 729 210.6
D 6 38 1961 5.85 796 729 210.6
D 10 189 1948 5.79 796 729 210.6

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