ASTROSAT CZTI

Data Quality Report

Orbit 41433

Creation date: 2024-06-27T22:28:56.984100
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_035T01_9000005666_41433cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41433cztM0_level2_quad_clean.evt
Size (bytes)301,253,76085,026,240
Size287.3 MB 81.1 MB
Events in quadrant A2,770,977571,995
Events in quadrant B2,383,967590,027
Events in quadrant C2,978,972540,723
Events in quadrant D2,627,501521,249

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112623
B0105492
C0118732
D0112832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5002130.259896%
B5002150.299880%
C50022565.117953%
D5002420.839664%

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 7094 5003 7 7 0.10% 0.14%
B 7094 5003 3 3 0.04% 0.06%
C 7094 5003 242 242 3.41% 4.84%
D 7094 5003 31 31 0.44% 0.62%

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 493162 4289.25 558 546 114.8
A 13 248 73491 635.14 558 546 114.8
A 2 79 40310 346.23 558 546 114.8
B 0 186 87825 817.28 556 541 106.8
B 0 190 68916 640.23 556 541 106.8
B 5 255 29516 271.31 556 541 106.8
C 0 10 674937 5412.36 536 540 124.6
C 15 214 203653 1630.08 536 540 124.6
C 15 111 7742 57.8 536 540 124.6
D 13 171 213574 1567.39 554 541 135.9
D 12 79 96335 704.8 554 541 135.9
D 13 249 83262 608.62 554 541 135.9

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