ASTROSAT CZTI

Data Quality Report

Orbit 33703

Creation date: 2024-06-27T20:51:42.737978
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_090T01_9000004812_33703cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33703cztM0_level2_quad_clean.evt
Size (bytes)810,930,24080,740,800
Size773.4 MB 77.0 MB
Events in quadrant A11,146,963419,564
Events in quadrant B5,201,807530,398
Events in quadrant C3,111,016558,753
Events in quadrant D4,703,880525,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037265134
B01928510
C0128396
D01805512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5847358961.381905%
B586172212.318717%
C5863570.972199%
D58611702.900529%

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 7207 5854 3370 3370 46.76% 57.57%
B 7206 5864 631 631 8.76% 10.76%
C 7206 5864 46 46 0.64% 0.78%
D 7207 5865 166 166 2.30% 2.83%

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 8156805 79401.42 513 504 102.7
A 15 237 986778 9601.36 513 504 102.7
A 13 254 8627 79.08 513 504 102.7
B 5 255 1433119 11546.17 648 632 124.1
B 5 172 1065246 8581.03 648 632 124.1
B 15 222 52482 417.92 648 632 124.1
C 15 214 270690 1782.05 653 657 151.5
C 0 10 192409 1265.45 653 657 151.5
C 0 239 26619 171.33 653 657 151.5
D 8 195 770393 4405.13 643 632 174.7
D 7 80 673743 3852.03 643 632 174.7
D 2 250 376742 2152.37 643 632 174.7

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