ASTROSAT CZTI

Data Quality Report

Orbit 39229

Creation date: 2024-06-27T22:02:01.227348
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/AS1A12_054T04_9000005446_39229cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39229cztM0_level2_quad_clean.evt
Size (bytes)517,196,16077,705,280
Size493.2 MB 74.1 MB
Events in quadrant A2,774,219630,888
Events in quadrant B2,361,867641,054
Events in quadrant C2,387,618590,518
Events in quadrant D11,244,548151,528

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109102
B0100011
C097931
D0367381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4833571.179392%
B483350.103455%
C483340.082764%
D4833388680.405545%

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 6896 4834 43 43 0.62% 0.89%
B 6896 4834 1 1 0.01% 0.02%
C 6896 4834 3 3 0.04% 0.06%
D 6896 4832 3010 3010 43.65% 62.29%

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 10 83 350543 2998.95 583 573 116.7
A 13 248 162629 1388.68 583 573 116.7
A 15 174 8953 71.81 583 573 116.7
B 5 172 108635 989.32 572 558 109.2
B 12 111 12917 113.13 572 558 109.2
B 11 111 11788 102.8 572 558 109.2
C 15 214 202000 1576.09 552 554 127.8
C 0 10 7607 55.18 552 554 127.8
C 8 79 6077 43.21 552 554 127.8
D 12 235 9601430 114100.39 346 336 84.1
D 2 249 65133 770.05 346 336 84.1
D 2 153 59744 706.01 346 336 84.1

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