ASTROSAT CZTI

Data Quality Report

Orbit 26576

Creation date: 2024-06-27T19:30:38.377896
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/AS1A09_095T02_9000003846_26576cztM0_level2.evt modeM0/AS1A09_095T02_9000003846_26576cztM0_level2_quad_clean.evt
Size (bytes)666,558,72086,019,840
Size635.7 MB 82.0 MB
Events in quadrant A3,162,576627,521
Events in quadrant B3,966,411623,577
Events in quadrant C3,125,675595,169
Events in quadrant D9,543,139355,707

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128920
B0155920
C0128750
D0324080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57441051.827994%
B57452874.995648%
C57451031.792863%
D5745275047.867711%

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 7084 5744 11 11 0.16% 0.19%
B 7085 5745 152 152 2.15% 2.65%
C 7085 5745 1 1 0.01% 0.02%
D 7085 5745 2401 2401 33.89% 41.79%

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 8 144 65506 422.7 783 771 153.1
A 0 13 46030 295.53 783 771 153.1
A 12 96 26608 168.71 783 771 153.1
B 3 64 721077 5186.67 762 747 138.9
B 3 112 162786 1166.75 762 747 138.9
B 0 189 37140 262.04 762 747 138.9
C 3 233 135220 804.25 733 739 167.2
C 14 238 122171 726.21 733 739 167.2
C 14 176 10480 58.25 733 739 167.2
D 7 80 6096414 45923.32 554 537 132.7
D 1 52 930853 7008.54 554 537 132.7
D 12 233 234345 1761.39 554 537 132.7

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