ASTROSAT CZTI

Data Quality Report

Orbit 14474

Creation date: 2024-06-27T16:55:39.707561
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/AS1A04_222T01_9000002132_14474cztM0_level2.evt modeM0/AS1A04_222T01_9000002132_14474cztM0_level2_quad_clean.evt
Size (bytes)64,183,68019,293,120
Size61.2 MB 18.4 MB
Events in quadrant A438,285129,757
Events in quadrant B556,363134,754
Events in quadrant C466,763130,520
Events in quadrant D423,074123,741

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017821
B021911
C018741
D017401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81820.244499%
B818202.444988%
C81810.122249%
D81810.122249%

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 819 819 0 0 0.00% 0.00%
B 819 819 1 1 0.12% 0.12%
C 819 818 0 0 0.00% 0.00%
D 819 818 0 0 0.00% 0.00%

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 12 189 4469 177.97 111 109 24.5
A 8 15 1112 40.94 111 109 24.5
A 0 226 1018 37.1 111 109 24.5
B 0 189 77721 3258.23 115 112 23.8
B 0 219 18670 779.11 115 112 23.8
B 4 142 6048 249.21 115 112 23.8
C 0 207 16196 586.91 112 113 27.4
C 3 233 11407 412.15 112 113 27.4
C 13 61 757 23.5 112 113 27.4
D 2 234 3374 115.77 109 106 28.2
D 10 70 2751 93.7 109 106 28.2
D 8 195 2008 67.38 109 106 28.2

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