ASTROSAT CZTI

Data Quality Report

Orbit 26964

Creation date: 2024-06-27T19:35:01.529979
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/AS1C05_019T03_9000003898_26964cztM0_level2.evt modeM0/AS1C05_019T03_9000003898_26964cztM0_level2_quad_clean.evt
Size (bytes)777,703,680119,914,560
Size741.7 MB 114.4 MB
Events in quadrant A11,729,396533,230
Events in quadrant B3,831,244910,735
Events in quadrant C3,224,340890,202
Events in quadrant D4,335,436849,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392610
B0156040
C0138020
D0173310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6388423266.249217%
B63881572.457733%
C6388881.377583%
D63882023.162179%

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 7548 6388 3531 3531 46.78% 55.28%
B 7548 6388 93 93 1.23% 1.46%
C 7548 6388 0 0 0.00% 0.00%
D 7548 6388 138 138 1.83% 2.16%

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 14 235 9550764 92539.04 512 501 103.2
A 6 16 110519 1066.04 512 501 103.2
A 0 13 64032 615.6 512 501 103.2
B 0 189 334741 2257.29 795 777 147.9
B 5 172 261697 1763.58 795 777 147.9
B 3 64 48126 320.04 795 777 147.9
C 14 238 126198 687.54 782 787 182.4
C 2 16 23906 126.75 782 787 182.4
C 15 208 12093 61.98 782 787 182.4
D 1 52 1040370 5694.02 776 756 182.6
D 2 250 291909 1594.66 776 756 182.6
D 12 233 43483 234.02 776 756 182.6

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