ASTROSAT CZTI

Data Quality Report

Orbit 16026

Creation date: 2024-06-27T17:16:57.722051
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/AS1T02_091T01_9000002368_16026cztM0_level2.evt modeM0/AS1T02_091T01_9000002368_16026cztM0_level2_quad_clean.evt
Size (bytes)488,905,920100,817,280
Size466.3 MB 96.1 MB
Events in quadrant A3,509,549647,659
Events in quadrant B3,780,194660,099
Events in quadrant C3,565,210637,626
Events in quadrant D3,480,592624,604

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147043
B0155402
C0147942
D0149002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6939801.152904%
B69391181.700533%
C69391071.542009%
D6939741.066436%

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 7645 6940 29 29 0.38% 0.42%
B 7645 6941 14 14 0.18% 0.20%
C 7645 6941 0 0 0.00% 0.00%
D 7645 6940 11 11 0.14% 0.16%

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 15 69 84171 469.14 879 862 177.6
A 12 96 16019 85.35 879 862 177.6
A 9 143 10395 53.68 879 862 177.6
B 15 222 81668 480.91 884 863 168.0
B 10 245 56259 329.69 884 863 168.0
B 7 220 55533 325.37 884 863 168.0
C 14 238 133364 664.3 851 860 199.5
C 3 233 107203 533.15 851 860 199.5
C 13 61 6016 25.85 851 860 199.5
D 2 152 129358 595.96 861 839 215.7
D 2 16 54020 246.61 861 839 215.7
D 2 234 25762 115.57 861 839 215.7

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