ASTROSAT CZTI

Data Quality Report

Orbit 15568

Creation date: 2024-06-27T17:10:18.364002
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_198T01_9000002308_15568cztM0_level2.evt modeM0/AS1A04_198T01_9000002308_15568cztM0_level2_quad_clean.evt
Size (bytes)1,012,567,680204,168,960
Size965.7 MB 194.7 MB
Events in quadrant A6,960,3141,298,307
Events in quadrant B7,227,4461,316,488
Events in quadrant C7,446,9551,271,574
Events in quadrant D8,012,7991,259,354

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306484
B0311503
C0314973
D0340163

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03080
B03080
C03080
D03080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15040840.558511%
B150401020.678191%
C150401751.163564%
D150402381.582447%

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 16946 15044 0 0 0.00% 0.00%
B 16946 15043 2 2 0.01% 0.01%
C 16946 15043 3 3 0.02% 0.02%
D 16946 15043 137 137 0.81% 0.91%

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 8 247 30015 78.04 1796 1755 362.1
A 0 226 15917 39.11 1796 1755 362.1
A 12 194 13371 32.07 1796 1755 362.1
B 0 189 46484 130.14 1796 1749 343.7
B 12 111 40178 111.8 1796 1749 343.7
B 4 216 37973 105.38 1796 1749 343.7
C 3 233 381144 941.02 1729 1739 403.2
C 14 238 266633 657.01 1729 1739 403.2
C 10 22 23671 54.4 1729 1739 403.2
D 5 222 363190 799.82 1745 1701 452.0
D 1 52 249318 547.87 1745 1701 452.0
D 15 0 212086 465.49 1745 1701 452.0

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