ASTROSAT CZTI

Data Quality Report

Orbit 37065

Creation date: 2024-06-27T21:35:05.034558
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_026T03_9000005280_37065cztM0_level2.evt modeM0/AS1A09_026T03_9000005280_37065cztM0_level2_quad_clean.evt
Size (bytes)496,857,60061,781,760
Size473.8 MB 58.9 MB
Events in quadrant A2,996,961379,991
Events in quadrant B3,724,680368,263
Events in quadrant C3,150,899369,709
Events in quadrant D4,779,309344,581

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124073
B0148562
C0127792
D0183922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5836140.239890%
B58362764.729267%
C5836450.771076%
D58362694.609321%

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 7269 5837 10 10 0.14% 0.17%
B 7269 5836 205 205 2.82% 3.51%
C 7269 5837 38 38 0.52% 0.65%
D 7269 5837 246 246 3.38% 4.21%

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 278592 2056.38 666 650 135.2
A 9 143 102733 755.27 666 650 135.2
A 7 3 18037 128.64 666 650 135.2
B 5 184 633951 5053.35 651 633 125.3
B 5 172 222690 1771.83 651 633 125.3
B 0 229 188388 1498.13 651 633 125.3
C 15 214 253046 1668.66 646 651 151.3
C 14 254 156934 1033.23 646 651 151.3
C 0 10 120529 792.55 646 651 151.3
D 12 235 497140 3165.51 636 616 156.9
D 1 47 456748 2907.99 636 616 156.9
D 6 112 419794 2672.4 636 616 156.9

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