ASTROSAT CZTI

Data Quality Report

Orbit 33988

Creation date: 2024-06-27T20:55:04.713192
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/AS1A11_046T07_9000004862_33988cztM0_level2.evt modeM0/AS1A11_046T07_9000004862_33988cztM0_level2_quad_clean.evt
Size (bytes)651,288,96056,928,960
Size621.1 MB 54.3 MB
Events in quadrant A2,655,442375,848
Events in quadrant B7,744,723320,126
Events in quadrant C3,150,279368,996
Events in quadrant D5,843,397314,768

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104443
B0262132
C0128222
D0207822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A488940.081816%
B4889245550.214768%
C4889641.309061%
D488983817.140520%

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 6981 4890 0 0 0.00% 0.00%
B 6981 4890 2179 2179 31.21% 44.56%
C 6981 4890 44 44 0.63% 0.90%
D 6981 4890 778 778 11.14% 15.91%

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 15 169 62044 465.08 665 656 132.0
A 10 83 15413 111.8 665 656 132.0
A 13 254 8807 61.75 665 656 132.0
B 5 14 1644027 15750.0 553 541 104.3
B 5 31 1629830 15613.95 553 541 104.3
B 5 15 1626105 15578.25 553 541 104.3
C 15 214 211662 1438.47 641 648 146.7
C 0 10 208057 1413.89 641 648 146.7
C 3 233 190315 1292.95 641 648 146.7
D 8 195 1208269 7638.96 582 573 158.1
D 8 230 1159740 7332.0 582 573 158.1
D 12 233 377063 2381.39 582 573 158.1

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