ASTROSAT CZTI

Data Quality Report

Orbit 36258

Creation date: 2022-06-13T14:39:41.480311
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/AS1A10_071T37_9000005180_36258cztM0_level2.evt modeM0/AS1A10_071T37_9000005180_36258cztM0_level2_quad_clean.evt
Size (bytes)454,731,84074,727,360
Size433.7 MB 71.3 MB
Events in quadrant A2,628,909490,944
Events in quadrant B4,836,516458,767
Events in quadrant C2,801,723479,707
Events in quadrant D3,144,394461,819

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112483
B0179752
C0115512
D0128532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5304120.226244%
B530467312.688537%
C5304751.414027%
D5304751.414027%

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 7066 5305 1 1 0.01% 0.02%
B 7066 5305 527 527 7.46% 9.93%
C 7066 5305 53 53 0.75% 1.00%
D 7066 5305 56 56 0.79% 1.06%

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 182958 1443.1 627 615 126.4
A 9 143 14846 112.63 627 615 126.4
A 13 254 8918 65.71 627 615 126.4
B 5 172 1364430 12032.91 593 577 113.3
B 5 236 773735 6821.37 593 577 113.3
B 4 171 155158 1363.83 593 577 113.3
C 15 214 222921 1557.68 609 613 142.7
C 0 10 206148 1440.15 609 613 142.7
C 13 61 4124 24.6 609 613 142.7
D 12 235 201932 1353.83 610 594 148.7
D 13 249 131129 877.74 610 594 148.7
D 12 6 120439 805.86 610 594 148.7

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