ASTROSAT CZTI

Data Quality Report

Orbit 47188

Creation date: 2024-06-27T23:32:36.841930
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_037T01_9000006300_47188cztM0_level2.fits modeM0/AS1A13_037T01_9000006300_47188cztM0_level2_quad_clean.evt
Size (bytes)441,023,040104,074,560
Size420.6 MB 99.3 MB
Events in quadrant A6,318,593681,367
Events in quadrant B3,365,337714,750
Events in quadrant C3,036,763673,291
Events in quadrant D3,090,910620,665

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230454
B0145961
C0139591
D0140581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66082904.388620%
B66091972.980784%
C66091241.876229%
D66091301.967015%

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 7108 6608 9 9 0.13% 0.14%
B 7109 6609 4 4 0.06% 0.06%
C 7109 6609 20 20 0.28% 0.30%
D 7109 6609 17 17 0.24% 0.26%

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 3215885 20883.32 737 720 154.0
A 9 191 241817 1565.99 737 720 154.0
A 13 254 13471 82.82 737 720 154.0
B 15 201 255879 1720.97 740 717 148.3
B 7 219 56213 374.3 740 717 148.3
B 4 171 50412 335.17 740 717 148.3
C 15 208 135963 788.74 726 727 171.5
C 14 254 69268 399.76 726 727 171.5
C 1 3 5026 25.07 726 727 171.5
D 5 171 83623 447.51 733 709 185.3
D 2 120 58425 311.51 733 709 185.3
D 12 218 41187 218.47 733 709 185.3

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