ASTROSAT CZTI

Data Quality Report

Orbit 39200

Creation date: 2024-06-27T22:01:41.908541
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_054T02_9000005444_39200cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39200cztM0_level2_quad_clean.evt
Size (bytes)397,212,48088,793,280
Size378.8 MB 84.7 MB
Events in quadrant A3,131,169634,772
Events in quadrant B2,393,402645,604
Events in quadrant C2,412,449598,975
Events in quadrant D6,387,413467,872

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122273
B0101092
C098782
D0222792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48721112.278325%
B4872410.841544%
C487230.061576%
D4872119724.568966%

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 6936 4873 81 81 1.17% 1.66%
B 6936 4873 21 21 0.30% 0.43%
C 6936 4873 0 0 0.00% 0.00%
D 6936 4873 1013 1013 14.60% 20.79%

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 13 248 415861 3521.36 587 576 117.9
A 10 83 402799 3410.6 587 576 117.9
A 9 143 35389 295.19 587 576 117.9
B 5 184 76433 694.14 575 560 109.3
B 5 172 49081 443.91 575 560 109.3
B 0 230 13703 120.24 575 560 109.3
C 15 214 208039 1601.25 560 564 129.6
C 0 10 7153 50.85 560 564 129.6
C 8 222 5129 35.23 560 564 129.6
D 12 235 3864486 30479.06 528 514 126.8
D 2 249 368525 2902.88 528 514 126.8
D 13 171 30708 238.17 528 514 126.8

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