ASTROSAT CZTI

Data Quality Report

Orbit 36796

Creation date: 2024-06-27T21:31:47.668997
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_9000005244_36796cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36796cztM0_level2_quad_clean.evt
Size (bytes)527,711,04090,141,120
Size503.3 MB 86.0 MB
Events in quadrant A2,543,322613,760
Events in quadrant B7,011,229556,329
Events in quadrant C3,174,349621,454
Events in quadrant D2,913,020586,381

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106973
B0242652
C0124752
D0120432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5013100.199481%
B5013159431.797327%
C50131262.513465%
D50131082.154399%

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 7046 5014 6 6 0.09% 0.12%
B 7046 5014 1433 1433 20.34% 28.58%
C 7046 5014 106 106 1.50% 2.11%
D 7046 5014 97 97 1.38% 1.93%

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 212653 1774.43 596 586 119.5
A 9 143 12484 99.55 596 586 119.5
A 13 6 11466 91.04 596 586 119.5
B 12 1 4192536 41122.42 547 535 101.9
B 5 172 226134 2213.07 547 535 101.9
B 0 190 130650 1276.39 547 535 101.9
C 1 23 254370 1879.88 587 593 135.0
C 15 214 228491 1688.18 587 593 135.0
C 0 207 207988 1536.3 587 593 135.0
D 12 227 248093 1776.62 579 565 139.3
D 5 222 72939 519.46 579 565 139.3
D 10 203 59817 425.28 579 565 139.3

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