ASTROSAT CZTI

Data Quality Report

Orbit 31659

Creation date: 2024-06-27T20:31:12.929367
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/AS1A10_056T01_9000004626_31659cztM0_level2.evt modeM0/AS1A10_056T01_9000004626_31659cztM0_level2_quad_clean.evt
Size (bytes)595,316,16096,304,320
Size567.7 MB 91.8 MB
Events in quadrant A3,202,588632,808
Events in quadrant B5,511,827636,971
Events in quadrant C4,793,095589,978
Events in quadrant D4,079,245600,717

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137932
B0211002
C0184782
D0163112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6545430.656990%
B65443164.828851%
C654569110.557678%
D65451121.711230%

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 8925 6547 4 4 0.04% 0.06%
B 8924 6546 86 86 0.96% 1.31%
C 8925 6547 507 507 5.68% 7.74%
D 8925 6547 49 49 0.55% 0.75%

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 49072 297.43 815 799 162.3
A 13 254 11990 68.95 815 799 162.3
A 3 137 7949 44.05 815 799 162.3
B 6 159 1824107 11868.29 813 793 153.6
B 10 245 301222 1955.55 813 793 153.6
B 0 190 76191 490.78 813 793 153.6
C 10 22 1278600 7156.03 759 762 178.6
C 0 10 241176 1346.34 759 762 178.6
C 3 233 150123 836.44 759 762 178.6
D 8 195 928547 5003.1 789 770 185.4
D 13 249 108594 581.45 789 770 185.4
D 6 0 29098 152.76 789 770 185.4

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