ASTROSAT CZTI

Data Quality Report

Orbit 33698

Creation date: 2024-06-27T20:51:38.542983
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_33698cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33698cztM0_level2_quad_clean.evt
Size (bytes)741,049,92050,189,760
Size706.7 MB 47.9 MB
Events in quadrant A11,057,963176,525
Events in quadrant B3,602,726330,922
Events in quadrant C3,130,649347,617
Events in quadrant D4,322,360320,798

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362542
B0138041
C0125531
D0164341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4882328767.328964%
B48823366.882425%
C4882741.515772%
D48822414.936501%

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 6974 4881 3138 3138 45.00% 64.29%
B 6973 4881 278 278 3.99% 5.70%
C 6974 4882 62 62 0.89% 1.27%
D 6974 4882 262 262 3.76% 5.37%

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 9266788 120579.11 385 378 76.8
A 15 237 267099 3470.71 385 378 76.8
A 14 4 28616 367.45 385 378 76.8
B 5 172 889748 7619.91 629 614 116.7
B 15 85 100322 854.5 629 614 116.7
B 5 255 64589 548.27 629 614 116.7
C 3 233 288375 1984.98 636 644 145.0
C 15 214 211062 1451.62 636 644 145.0
C 0 10 128279 880.52 636 644 145.0
D 2 250 496599 2965.09 623 613 167.3
D 8 195 488518 2916.78 623 613 167.3
D 8 230 384928 2297.5 623 613 167.3

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