ASTROSAT CZTI

Data Quality Report

Orbit 31901

Creation date: 2024-06-27T20:34:19.649947
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/AS1T04_044T01_9000004652_31901cztM0_level2.evt modeM0/AS1T04_044T01_9000004652_31901cztM0_level2_quad_clean.evt
Size (bytes)488,805,12066,651,840
Size466.2 MB 63.6 MB
Events in quadrant A2,466,716445,329
Events in quadrant B4,009,885446,892
Events in quadrant C4,954,799374,666
Events in quadrant D3,050,801417,975

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100411
B0152601
C0181161
D0122911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4738170.358801%
B47382054.326720%
C473883917.707894%
D4738350.738708%

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 4738 4738 2 2 0.04% 0.04%
B 4738 4738 79 79 1.67% 1.67%
C 4738 4738 600 600 12.66% 12.66%
D 4738 4738 14 14 0.30% 0.30%

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 12 96 13412 101.33 633 623 126.2
A 13 6 11764 88.27 633 623 126.2
A 13 254 6950 50.13 633 623 126.2
B 6 159 1231444 10407.3 619 606 118.3
B 10 245 321777 2715.65 619 606 118.3
B 12 111 13978 113.07 619 606 118.3
C 3 233 2296639 18007.69 550 553 127.5
C 0 10 394690 3091.13 550 553 127.5
C 14 238 91532 713.53 550 553 127.5
D 8 195 494877 3484.16 603 589 141.9
D 13 174 93577 655.46 603 589 141.9
D 12 233 53943 376.08 603 589 141.9

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