ASTROSAT CZTI

Data Quality Report

Orbit 35665

Creation date: 2024-06-27T21:16:20.732593
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/AS1C07_001T07_9000005104_35665cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35665cztM0_level2_quad_clean.evt
Size (bytes)440,792,64097,375,680
Size420.4 MB 92.9 MB
Events in quadrant A2,619,283655,592
Events in quadrant B4,120,267634,269
Events in quadrant C3,083,739659,049
Events in quadrant D3,167,394630,453

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112473
B0157352
C0122752
D0129252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A527690.170584%
B527655210.462472%
C52761502.843063%
D52771402.653023%

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 7127 5277 0 0 0.00% 0.00%
B 7127 5277 428 428 6.01% 8.11%
C 7127 5277 129 129 1.81% 2.44%
D 7128 5278 127 127 1.78% 2.41%

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 150985 1200.07 631 619 125.3
A 13 6 22084 171.31 631 619 125.3
A 3 137 6275 45.14 631 619 125.3
B 5 172 1486627 13162.5 592 577 112.9
B 5 255 215182 1900.84 592 577 112.9
B 3 112 29036 252.07 592 577 112.9
C 0 10 361590 2576.17 613 618 140.1
C 15 214 217849 1550.32 613 618 140.1
C 1 23 78196 553.65 613 618 140.1
D 7 80 265569 1749.76 619 604 151.4
D 13 249 188069 1237.97 619 604 151.4
D 2 249 80819 529.72 619 604 151.4

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