ASTROSAT CZTI

Data Quality Report

Orbit 02327

Creation date: 2024-06-27T14:16:18.102590
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/AS1T01_056T01_9000000356_02327cztM0_level2.evt modeM0/AS1T01_056T01_9000000356_02327cztM0_level2_quad_clean.evt
Size (bytes)342,048,96032,408,640
Size326.2 MB 30.9 MB
Events in quadrant A1,803,975180,076
Events in quadrant B4,320,094171,490
Events in quadrant C1,977,962180,987
Events in quadrant D1,993,806175,165

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079462
B0155581
C084121
D085071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3867370.956814%
B386743511.249030%
C3867330.853375%
D3867541.396431%

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 4791 3867 4 4 0.08% 0.10%
B 4792 3868 200 200 4.17% 5.17%
C 4792 3868 4 4 0.08% 0.10%
D 4792 3868 15 15 0.31% 0.39%

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 0 149 8599 84.78 464 452 96.1
A 8 192 6780 65.85 464 452 96.1
A 0 226 5858 56.26 464 452 96.1
B 0 85 2430744 27129.32 458 447 89.6
B 4 48 25816 283.19 458 447 89.6
B 15 54 22366 244.68 458 447 89.6
C 5 234 138110 1285.88 452 454 107.1
C 14 223 52752 488.53 452 454 107.1
C 9 191 13043 117.6 452 454 107.1
D 12 79 144674 1326.89 450 439 108.7
D 6 112 30896 280.19 450 439 108.7
D 8 195 29810 270.2 450 439 108.7

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