ASTROSAT CZTI

Data Quality Report

Orbit 20220911_A11_075T01_9000005342_level2

Creation date: 2022-09-23T03:24:51.863036
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/AS1A11_075T01_9000005342cztM0_level2_bc.evt modeM0/AS1A11_075T01_9000005342cztM0_level2_quad_clean.evt
Size (bytes)21,975,410,8806,135,416,640
Size20.5 GB 5.7 GB
Events in quadrant A197,119,58237,615,543
Events in quadrant B120,039,86440,052,613
Events in quadrant C117,307,04940,374,505
Events in quadrant D200,665,40637,138,061

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091600
B091600
C091600
D091600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013492460
B010091880
C09455250
D012733780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017030
B017030
C017030
D017030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A447668360658.056193%
B44766878941.763360%
C44766820500.457929%
D447668244915.470795%

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 616976 447758 573 573 0.09% 0.13%
B 616976 447662 507 507 0.08% 0.11%
C 616976 447647 243 243 0.04% 0.05%
D 616976 447666 8901 8901 1.44% 1.99%

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 15 222 78954799 16213.23 22074 21756 4868.4
A 10 83 20256422 4156.3 22074 21756 4868.4
A 9 143 4051918 827.81 22074 21756 4868.4
B 5 172 11654156 2547.08 23253 22778 4566.6
B 5 255 3691757 803.45 23253 22778 4566.6
B 0 230 2946251 640.19 23253 22778 4566.6
C 15 214 19130744 3688.58 22940 22816 5180.3
C 0 10 3828875 734.72 22940 22816 5180.3
C 14 254 3254273 623.8 22940 22816 5180.3
D 12 227 56874864 10743.8 22454 21830 5291.7
D 2 249 17308564 3266.76 22454 21830 5291.7
D 2 250 7591935 1430.56 22454 21830 5291.7

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