ASTROSAT CZTI

Data Quality Report

Orbit 27593

Creation date: 2024-06-27T19:41:57.494389
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/AS1T03_257T01_9000003976_27593cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27593cztM0_level2_quad_clean.evt
Size (bytes)668,946,24091,316,160
Size638.0 MB 87.1 MB
Events in quadrant A3,931,823565,291
Events in quadrant B4,556,191568,404
Events in quadrant C4,111,700547,128
Events in quadrant D7,112,633523,157

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168860
B0186900
C0173230
D0266020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80802673.304455%
B80803874.789604%
C80803504.331683%
D80815697.041208%

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 8905 8083 0 0 0.00% 0.00%
B 8905 8083 27 27 0.30% 0.33%
C 8905 8083 17 17 0.19% 0.21%
D 8906 8084 290 290 3.26% 3.59%

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 13 254 13033 58.25 1017 992 206.7
A 3 137 10350 45.27 1017 992 206.7
A 0 226 8616 36.88 1017 992 206.7
B 3 64 422430 2136.91 1012 984 197.2
B 10 245 84438 423.15 1012 984 197.2
B 0 230 38462 190.03 1012 984 197.2
C 14 238 155185 658.18 980 985 234.3
C 2 16 127101 538.3 980 985 234.3
C 13 61 6692 24.36 980 985 234.3
D 1 52 2944035 12546.27 975 947 234.6
D 6 112 250477 1063.74 975 947 234.6
D 2 250 119016 503.32 975 947 234.6

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