ASTROSAT CZTI

Data Quality Report

Orbit 37697

Creation date: 2024-06-27T21:43:15.218942
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/AS1A11_075T01_9000005342_37697cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37697cztM0_level2_quad_clean.evt
Size (bytes)466,202,88079,320,960
Size444.6 MB 75.6 MB
Events in quadrant A4,635,138501,224
Events in quadrant B2,425,102527,088
Events in quadrant C2,512,486532,684
Events in quadrant D4,209,057491,673

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172663
B0104782
C0104222
D0159502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4981871.746637%
B4981270.542060%
C4981220.441678%
D49811212.429231%

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 6954 4982 15 15 0.22% 0.30%
B 6953 4981 15 15 0.22% 0.30%
C 6953 4980 16 16 0.23% 0.32%
D 6953 4980 131 131 1.88% 2.63%

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 15 222 2122201 19194.2 553 543 110.5
A 10 83 295918 2672.2 553 543 110.5
A 13 248 31163 277.01 553 543 110.5
B 5 172 81223 748.47 562 548 107.8
B 0 230 34324 313.36 562 548 107.8
B 5 255 28358 258.01 562 548 107.8
C 15 214 228738 1771.61 557 562 128.8
C 0 10 83335 642.67 557 562 128.8
C 3 233 16856 126.51 557 562 128.8
D 12 227 1551078 11895.91 543 529 130.3
D 5 222 230966 1767.93 543 529 130.3
D 13 249 158986 1215.69 543 529 130.3

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