ASTROSAT CZTI

Data Quality Report

Orbit 04838

Creation date: 2024-06-27T14:47:44.704253
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/AS1G05_253T02_9000000614_04838cztM0_level2.evt modeM0/AS1G05_253T02_9000000614_04838cztM0_level2_quad_clean.evt
Size (bytes)538,505,28088,018,560
Size513.6 MB 83.9 MB
Events in quadrant A3,570,863539,945
Events in quadrant B3,742,338538,885
Events in quadrant C3,492,330542,355
Events in quadrant D4,983,825511,894

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161963
B0164082
C0159652
D0201812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7655560.731548%
B7655901.175702%
C7655220.287394%
D76552533.305029%

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 8760 7657 17 17 0.19% 0.22%
B 8760 7657 18 18 0.21% 0.24%
C 8760 7657 5 5 0.06% 0.07%
D 8759 7656 182 182 2.08% 2.38%

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 0 50 70068 379.85 882 861 182.2
A 8 15 68453 370.99 882 861 182.2
A 0 149 22315 117.75 882 861 182.2
B 4 80 106397 611.85 891 869 172.5
B 15 204 50174 285.87 891 869 172.5
B 10 245 48669 277.14 891 869 172.5
C 8 208 74524 369.01 855 860 199.6
C 5 250 36105 176.56 855 860 199.6
C 12 4 17180 81.75 855 860 199.6
D 2 234 542513 2586.94 842 815 209.4
D 2 136 357938 1705.48 842 815 209.4
D 13 53 324215 1544.43 842 815 209.4

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