ASTROSAT CZTI

Data Quality Report

Orbit 14884

Creation date: 2024-06-27T17:00:54.284015
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/AS1T02_054T01_9000002200_14884cztM0_level2.evt modeM0/AS1T02_054T01_9000002200_14884cztM0_level2_quad_clean.evt
Size (bytes)589,835,520104,129,280
Size562.5 MB 99.3 MB
Events in quadrant A3,499,749686,577
Events in quadrant B3,907,676676,443
Events in quadrant C3,659,724682,374
Events in quadrant D6,295,098594,027

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153302
B0164231
C0155031
D0238221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73811421.923859%
B73812463.332882%
C7381640.867091%
D7381111015.038613%

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 7567 7383 1 1 0.01% 0.01%
B 7567 7383 46 46 0.61% 0.62%
C 7567 7383 5 5 0.07% 0.07%
D 7567 7383 924 924 12.21% 12.52%

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 12 189 43963 241.58 881 861 178.4
A 3 1 27525 149.45 881 861 178.4
A 9 143 20693 111.16 881 861 178.4
B 3 64 183706 1106.34 869 846 165.3
B 0 219 86344 517.28 869 846 165.3
B 0 189 61095 364.52 869 846 165.3
C 3 233 188427 956.85 849 852 196.0
C 0 207 140275 711.22 849 852 196.0
C 8 128 11715 55.41 849 852 196.0
D 7 254 3216024 17296.34 776 755 185.9
D 13 172 40293 212.69 776 755 185.9
D 7 38 26872 140.49 776 755 185.9

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