ASTROSAT CZTI

Data Quality Report

Orbit 03848

Creation date: 2024-06-27T14:34:19.856566
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/AS1G05_189T01_9000000492_03848cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03848cztM0_level2_quad_clean.evt
Size (bytes)468,434,88070,303,680
Size446.7 MB 67.0 MB
Events in quadrant A3,272,515436,596
Events in quadrant B3,414,333438,033
Events in quadrant C4,438,300418,607
Events in quadrant D2,655,370417,376

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136022
B0142081
C0176601
D0123441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5991751.251878%
B5991931.552328%
C5991801.335336%
D5991330.550826%

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 7187 5991 4 4 0.06% 0.07%
B 7187 5991 19 19 0.26% 0.32%
C 7187 5991 35 35 0.49% 0.58%
D 7187 5991 1 1 0.01% 0.02%

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 15 234 477668 3287.08 709 696 145.1
A 0 50 22807 152.38 709 696 145.1
A 0 199 19848 131.99 709 696 145.1
B 15 204 409085 2946.87 716 701 138.6
B 4 81 148490 1066.43 716 701 138.6
B 0 244 35161 248.66 716 701 138.6
C 2 53 1679036 10557.48 681 686 159.0
C 1 241 68576 427.05 681 686 159.0
C 10 65 20086 122.03 681 686 159.0
D 2 63 25175 145.56 680 663 168.4
D 13 248 14976 85.0 680 663 168.4
D 2 14 14418 81.68 680 663 168.4

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
Veto Counter