ASTROSAT CZTI

Data Quality Report

Orbit 45497

Creation date: 2024-06-27T23:12:54.252537
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_054T01_9000006098_45497cztM0_level2.fits modeM0/AS1A13_054T01_9000006098_45497cztM0_level2_quad_clean.evt
Size (bytes)622,843,200151,617,600
Size594.0 MB 144.6 MB
Events in quadrant A7,681,260992,243
Events in quadrant B4,550,0091,048,974
Events in quadrant C4,338,315998,761
Events in quadrant D5,745,598888,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307631432
B020852841
C020608786
D0252321762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02015
B02026
C02039
D020110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0131
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95172162.269623%
B95861291.345712%
C9589730.761289%
D94952302.422328%

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 10961 9665 0 0 0.00% 0.00%
B 10964 9699 9 9 0.08% 0.09%
C 10951 9699 15 15 0.14% 0.15%
D 11019 9647 109 109 0.99% 1.13%

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 3558187 16038.22 1065 1042 221.8
A 3 137 12567 51.96 1065 1042 221.8
A 13 254 10223 41.39 1065 1042 221.8
B 5 172 49396 226.32 1078 1045 213.6
B 12 18 42533 194.19 1078 1045 213.6
B 0 189 41311 188.47 1078 1045 213.6
C 14 254 141172 559.48 1061 1066 250.4
C 3 233 38143 148.06 1061 1066 250.4
C 2 14 12820 46.94 1061 1066 250.4
D 1 52 690903 2622.0 1041 1006 263.1
D 2 249 543504 2061.8 1041 1006 263.1
D 11 241 166522 629.05 1041 1006 263.1

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