ASTROSAT CZTI

Data Quality Report

Orbit 20160228_T01_058T01_9000000348_level2

Creation date: 2025-10-27T22:44:52.606670
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/AS1T01_058T01_9000000348cztM0_level2.fits modeM0/AS1T01_058T01_9000000348cztM0_level2_quad_clean.evt
Size (bytes)1,053,460,800915,209,280
Size1004.7 MB 872.8 MB
Events in quadrant A7,100,4145,487,004
Events in quadrant B6,515,6255,530,826
Events in quadrant C6,345,7305,346,915
Events in quadrant D5,734,4165,149,479

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140481886631976140479790317614
B1140481886631976140479790317614
C1140481886631976140479790317614
D1140481886631976140479790317614

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018240
B018230
C018210
D018480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01849960
B01931130
C02567070
D02106780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A905376750.745552%
B9050616191.788832%
C9134484259.223375%
D8983522382.491234%

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 149845 91147 0 0 0.00% 0.00%
B 149844 90907 0 0 0.00% 0.00%
C 149844 91694 0 0 0.00% 0.00%
D 149844 90145 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 4557 6.94 1859 1769 401.8
A 7 110 4361 6.45 1859 1769 401.8
A 12 254 4355 6.44 1859 1769 401.8
B 2 9 4453 8.61 1734 1659 324.5
B 5 128 3643 6.11 1734 1659 324.5
B 5 225 3539 5.79 1734 1659 324.5
C 7 111 3818 5.72 1693 1639 381.1
C 12 250 3735 5.5 1693 1639 381.1
C 2 127 3635 5.24 1693 1639 381.1

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