ASTROSAT CZTI

Data Quality Report

Orbit 22335

Creation date: 2024-06-27T18:39:37.475722
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/AS1T03_147T01_9000003306_22335cztM0_level2.evt modeM0/AS1T03_147T01_9000003306_22335cztM0_level2_quad_clean.evt
Size (bytes)358,272,00070,027,200
Size341.7 MB 66.8 MB
Events in quadrant A2,491,668445,594
Events in quadrant B2,547,909463,612
Events in quadrant C2,602,640442,146
Events in quadrant D2,872,027422,853

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103121
B0104511
C0104381
D0115461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4931531.074833%
B4931691.399310%
C4931851.723788%
D49311543.123099%

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 6256 4932 0 0 0.00% 0.00%
B 6256 4932 0 0 0.00% 0.00%
C 6256 4932 0 0 0.00% 0.00%
D 6256 4932 84 84 1.34% 1.70%

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 13 254 6820 47.61 646 632 130.0
A 0 226 5379 36.52 646 632 130.0
A 3 137 5163 34.86 646 632 130.0
B 12 111 14101 112.02 650 635 120.2
B 11 111 12691 100.29 650 635 120.2
B 14 111 11363 89.24 650 635 120.2
C 14 238 100349 665.21 639 642 149.9
C 0 10 8638 53.35 639 642 149.9
C 13 61 4509 25.8 639 642 149.9
D 1 52 433323 2849.7 635 619 151.8
D 2 234 18719 119.2 635 619 151.8
D 5 32 14753 93.08 635 619 151.8

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