ASTROSAT CZTI

Data Quality Report

Orbit 20170723_A03_134T01_9000001400_level2

Creation date: 2025-11-15T14:02:17.998559
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/AS1A03_134T01_9000001400cztM0_level2.fits modeM0/AS1A03_134T01_9000001400cztM0_level2_quad_clean.evt
Size (bytes)530,804,160542,050,560
Size506.2 MB 516.9 MB
Events in quadrant A3,200,2193,283,263
Events in quadrant B3,094,1323,287,477
Events in quadrant C3,153,4963,104,706
Events in quadrant D2,666,9242,783,439

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01187990
B01210110
C01187240
D01550580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011780
B011580
C011760
D011780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0810
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5773810921.891302%
B5763012282.130835%
C577318731.512186%
D5759728024.864837%

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 68766 58793 0 0 0.00% 0.00%
B 68766 58698 0 0 0.00% 0.00%
C 68777 58821 0 0 0.00% 0.00%
D 68777 58621 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 3072 10.79 831 776 212.7
A 7 110 2731 9.19 831 776 212.7
A 0 30 2414 7.7 831 776 212.7
B 2 9 2799 12.37 816 775 163.6
B 14 254 2094 8.06 816 775 163.6
B 3 17 2076 7.95 816 775 163.6
C 12 241 2278 6.87 834 772 219.1
C 9 242 2107 6.09 834 772 219.1
C 2 191 2090 6.01 834 772 219.1
D 6 231 1993 6.44 760 691 202.1
D 3 14 1973 6.34 760 691 202.1
D 7 5 1879 5.88 760 691 202.1

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