ASTROSAT CZTI

Data Quality Report

Orbit 38940

Creation date: 2024-06-27T21:58:25.261213
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/AS1T05_064T01_9000005416_38940cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38940cztM0_level2_quad_clean.evt
Size (bytes)443,266,56088,603,200
Size422.7 MB 84.5 MB
Events in quadrant A2,757,292639,525
Events in quadrant B3,166,959604,787
Events in quadrant C2,508,838639,474
Events in quadrant D7,590,027451,703

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112593
B0126292
C0102702
D0261182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4954300.605571%
B49544068.195398%
C495480.161486%
D4954134327.109407%

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 7076 4955 24 24 0.34% 0.48%
B 7076 4955 360 360 5.09% 7.27%
C 7076 4955 3 3 0.04% 0.06%
D 7076 4955 1478 1478 20.89% 29.83%

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 413787 3533.91 578 568 116.9
A 13 248 90216 766.68 578 568 116.9
A 12 189 11139 90.4 578 568 116.9
B 5 172 980597 9499.76 549 534 103.2
B 0 230 16616 155.88 549 534 103.2
B 12 111 12201 113.09 549 534 103.2
C 15 214 206623 1549.73 580 585 133.0
C 0 10 17199 124.96 580 585 133.0
C 14 254 12355 88.53 580 585 133.0
D 12 235 3375236 26776.97 523 509 126.0
D 12 227 766831 6080.43 523 509 126.0
D 14 52 536175 4250.27 523 509 126.0

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