ASTROSAT CZTI

Data Quality Report

Orbit 08801

Creation date: 2024-06-27T15:37:25.529335
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_135T01_9000001226_08801cztM0_level2.evt modeM0/AS1A03_135T01_9000001226_08801cztM0_level2_quad_clean.evt
Size (bytes)518,970,24093,461,760
Size494.9 MB 89.1 MB
Events in quadrant A3,782,928613,691
Events in quadrant B3,187,602615,651
Events in quadrant C2,929,787597,970
Events in quadrant D5,398,067571,960

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152532
B0133611
C0128031
D0203971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61741953.158406%
B61741312.121801%
C6174691.117590%
D61743074.972465%

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 7409 6174 62 62 0.84% 1.00%
B 7409 6174 21 21 0.28% 0.34%
C 7409 6174 0 0 0.00% 0.00%
D 7409 6174 195 195 2.63% 3.16%

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 729843 4552.51 784 769 160.1
A 15 174 12810 75.18 784 769 160.1
A 5 16 10620 61.51 784 769 160.1
B 10 16 86301 574.56 779 764 148.9
B 0 213 38943 256.45 779 764 148.9
B 4 80 25223 164.29 779 764 148.9
C 13 61 5801 29.2 749 754 172.8
C 1 16 4481 21.56 749 754 172.8
C 8 222 2404 9.55 749 754 172.8
D 2 16 2158051 11863.95 746 731 181.8
D 1 52 145509 796.19 746 731 181.8
D 2 152 84070 458.31 746 731 181.8

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