ASTROSAT CZTI

Data Quality Report

Orbit 20170513_G07_010T03_9000001224_level2

Creation date: 2025-11-13T14:56:31.925066
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/AS1G07_010T03_9000001224cztM0_level2.fits modeM0/AS1G07_010T03_9000001224cztM0_level2_quad_clean.evt
Size (bytes)528,744,960526,150,080
Size504.3 MB 501.8 MB
Events in quadrant A3,203,0863,239,209
Events in quadrant B3,115,7723,266,724
Events in quadrant C3,192,9503,112,782
Events in quadrant D2,561,9762,380,033

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011700
B011780
C011760
D011700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01298480
B01191800
C01176980
D02054160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5738512642.202666%
B574146141.069426%
C574133220.560849%
D57170796613.933881%

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 64743 57580 0 0 0.00% 0.00%
B 64743 57646 0 0 0.00% 0.00%
C 64743 57645 0 0 0.00% 0.00%
D 64742 57421 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 3116 11.14 832 776 210.0
A 7 110 2521 8.31 832 776 210.0
A 9 19 2365 7.57 832 776 210.0
B 2 9 2729 11.96 819 778 163.1
B 14 254 2177 8.57 819 778 163.1
B 2 8 2125 8.26 819 778 163.1
C 12 241 2313 6.84 843 782 224.0
C 1 81 2274 6.66 843 782 224.0
C 1 80 2270 6.64 843 782 224.0
D 1 19 1851 6.04 731 664 196.7
D 6 231 1840 5.98 731 664 196.7
D 3 14 1812 5.84 731 664 196.7

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