ASTROSAT CZTI

Data Quality Report

Orbit 08901

Creation date: 2024-06-27T15:38:45.067700
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_092T01_9000001240_08901cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08901cztM0_level2_quad_clean.evt
Size (bytes)528,834,24096,157,440
Size504.3 MB 91.7 MB
Events in quadrant A4,286,640624,864
Events in quadrant B3,448,070634,322
Events in quadrant C3,099,616620,067
Events in quadrant D4,759,550598,279

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170283
B0139952
C0132282
D0184392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62291462.343875%
B62291402.247552%
C6229951.525124%
D62291652.648900%

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 7534 6229 11 11 0.15% 0.18%
B 7534 6229 29 29 0.38% 0.47%
C 7534 6229 9 9 0.12% 0.14%
D 7534 6229 54 54 0.72% 0.87%

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 5 1104031 6730.23 815 800 163.9
A 15 174 19600 114.69 815 800 163.9
A 5 16 16377 95.03 815 800 163.9
B 10 16 160386 1051.17 811 793 151.8
B 0 219 48583 314.77 811 793 151.8
B 0 214 37919 244.53 811 793 151.8
C 1 3 23334 126.17 782 786 178.7
C 12 4 11157 58.03 782 786 178.7
C 9 68 11145 57.96 782 786 178.7
D 1 52 1086373 5724.45 783 764 189.6
D 8 195 429599 2261.26 783 764 189.6
D 7 71 119341 625.26 783 764 189.6

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