ASTROSAT CZTI

Data Quality Report

Orbit 20160803_G05_191T01_9000000572_level2

Creation date: 2025-11-04T14:14:03.384430
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/AS1G05_191T01_9000000572cztM0_level2.fits modeM0/AS1G05_191T01_9000000572cztM0_level2_quad_clean.evt
Size (bytes)494,832,960577,756,800
Size471.9 MB 551.0 MB
Events in quadrant A3,018,9263,758,421
Events in quadrant B2,911,9703,733,458
Events in quadrant C2,982,9123,554,804
Events in quadrant D2,303,8762,688,005

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01155710
B01196980
C01151700
D01766660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011120
B011140
C011140
D011140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A548799531.736548%
B5487711392.075551%
C549026201.129285%
D54806862115.730030%

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 61753 54973 0 0 0.00% 0.00%
B 61753 54965 0 0 0.00% 0.00%
C 61753 54978 0 0 0.00% 0.00%
D 61753 54225 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 3058 11.6 781 729 200.8
A 14 188 2968 11.15 781 729 200.8
A 7 110 2711 9.87 781 729 200.8
B 2 9 2480 11.19 767 728 156.6
B 12 226 2171 9.22 767 728 156.6
B 5 128 2002 8.14 767 728 156.6
C 1 81 2349 7.56 786 726 214.6
C 1 80 2327 7.46 786 726 214.6
C 12 250 2262 7.16 786 726 214.6
D 11 82 1975 7.7 656 595 179.3
D 1 19 1743 6.4 656 595 179.3
D 3 14 1721 6.28 656 595 179.3

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