ASTROSAT CZTI

Data Quality Report

Orbit 09741

Creation date: 2024-06-27T15:50:06.856066
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/AS1A03_114T01_9000001390_09741cztM0_level2.evt modeM0/AS1A03_114T01_9000001390_09741cztM0_level2_quad_clean.evt
Size (bytes)100,733,76014,400,000
Size96.1 MB 13.7 MB
Events in quadrant A722,00982,813
Events in quadrant B724,46486,022
Events in quadrant C689,82883,782
Events in quadrant D816,76278,954

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030186
B030034
C029571
D033501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A139740.286328%
B1398120.858369%
C139920.142959%
D1399211.501072%

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 2724 1400 0 0 0.00% 0.00%
B 2724 1400 0 0 0.00% 0.00%
C 2724 1400 0 0 0.00% 0.00%
D 2724 1400 15 15 0.55% 1.07%

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 15 239 6631 165.6 183 179 39.0
A 1 162 3125 75.61 183 179 39.0
A 0 226 1667 38.19 183 179 39.0
B 12 111 4039 102.2 186 182 37.7
B 11 111 3386 84.9 186 182 37.7
B 14 111 2888 71.7 186 182 37.7
C 13 61 1395 28.35 176 178 42.9
C 8 222 733 12.93 176 178 42.9
C -1 -1 -1 -1.0 176 178 42.9
D 1 52 132114 2864.67 171 167 46.1
D 13 104 11181 239.12 171 167 46.1
D 8 195 5183 108.9 171 167 46.1

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