ASTROSAT CZTI

Data Quality Report

Orbit 20210107_A10_102T07_9000004102_level2

Creation date: 2021-01-11T12:45:46.328921
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_102T07_9000004102cztM0_level2_bc.evt modeM0/AS1A10_102T07_9000004102cztM0_level2_quad_clean.evt
Size (bytes)4,183,729,9201,277,101,440
Size3.9 GB 1.2 GB
Events in quadrant A24,710,9078,402,377
Events in quadrant B23,003,6128,428,649
Events in quadrant C20,046,6387,934,006
Events in quadrant D52,591,2807,515,772

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02148920
B02077160
C01977400
D03037780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019020
B019020
C019020
D019020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570
B01570
C01570
D01570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9339122712.431712%
B9339122372.395306%
C9339116511.767836%
D9339175438.076795%

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 116657 93381 50 50 0.04% 0.05%
B 116657 93378 14 14 0.01% 0.01%
C 116657 93379 4 4 0.00% 0.00%
D 116657 93380 2367 2367 2.03% 2.53%

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 15 174 3993494 3576.96 5196 5120 1115.0
A 14 238 503252 446.75 5196 5120 1115.0
A 13 254 158563 137.61 5196 5120 1115.0
B 10 245 1297464 1334.36 5198 5083 968.5
B 4 171 1052930 1081.88 5198 5083 968.5
B 0 230 270318 273.85 5198 5083 968.5
C 7 247 849404 736.81 4904 4882 1146.2
C 3 233 268651 230.13 4904 4882 1146.2
C 13 61 28073 20.23 4904 4882 1146.2
D 1 52 19424452 17382.22 4929 4781 1117.2
D 8 195 12424966 11117.1 4929 4781 1117.2
D 2 250 905238 805.98 4929 4781 1117.2

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