ASTROSAT CZTI

Data Quality Report

Orbit 45457

Creation date: 2024-06-27T23:12:30.142553
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/AS1A13_038T03_9000006088_45457cztM0_level2.fits modeM0/AS1A13_038T03_9000006088_45457cztM0_level2_quad_clean.evt
Size (bytes)481,579,200110,007,360
Size459.3 MB 104.9 MB
Events in quadrant A6,081,582714,797
Events in quadrant B3,984,699749,687
Events in quadrant C3,093,475736,893
Events in quadrant D4,149,341664,640

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227464
B0163372
C0138852
D0168952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66663495.235524%
B66662343.510351%
C6666741.110111%
D66661702.550255%

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 7741 6667 123 123 1.59% 1.84%
B 7741 6667 100 100 1.29% 1.50%
C 7741 6667 13 13 0.17% 0.19%
D 7741 6667 95 95 1.23% 1.42%

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 10 83 2807990 17735.03 762 745 158.3
A 10 255 254954 1605.99 762 745 158.3
A 2 79 30526 188.14 762 745 158.3
B 15 201 629524 4161.88 764 741 151.1
B 5 172 88198 578.87 764 741 151.1
B 3 112 86983 570.83 764 741 151.1
C 3 233 51349 282.7 761 765 178.9
C 14 254 25392 137.64 761 765 178.9
C 1 3 22405 120.94 761 765 178.9
D 13 84 442024 2331.1 755 735 189.3
D 11 241 424435 2238.19 755 735 189.3
D 1 52 117626 617.48 755 735 189.3

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