ASTROSAT CZTI

Data Quality Report

Orbit 28575

Creation date: 2024-06-27T19:53:32.551853
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/AS1A10_110T01_9000004104_28575cztM0_level2.evt modeM0/AS1A10_110T01_9000004104_28575cztM0_level2_quad_clean.evt
Size (bytes)574,899,84084,124,800
Size548.3 MB 80.2 MB
Events in quadrant A3,544,449541,014
Events in quadrant B3,533,717549,971
Events in quadrant C3,477,213531,098
Events in quadrant D6,422,019478,871

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145722
B0144792
C0143252
D0234603

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64001161.812500%
B64001612.515625%
C64001612.515625%
D6399114917.955931%

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 7575 6400 22 22 0.29% 0.34%
B 7575 6400 4 4 0.05% 0.06%
C 7575 6400 2 2 0.03% 0.03%
D 7574 6399 548 548 7.24% 8.56%

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 15 174 121194 691.94 872 858 173.9
A 1 113 45987 259.5 872 858 173.9
A 8 192 11665 62.14 872 858 173.9
B 15 33 47912 285.25 865 844 165.0
B 4 171 33415 197.39 865 844 165.0
B 0 230 21592 125.74 865 844 165.0
C 14 238 136371 690.11 844 852 196.4
C 7 247 23144 113.52 844 852 196.4
C 0 207 18371 89.21 844 852 196.4
D 1 52 2888185 15662.47 776 758 184.4
D 8 195 376090 2035.94 776 758 184.4
D 2 250 111326 599.76 776 758 184.4

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