ASTROSAT CZTI

Data Quality Report

Orbit 01250

Creation date: 2024-06-27T14:09:50.774071
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/AS1G04_011T02_9000000226_01250cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01250cztM0_level2_quad_clean.evt
Size (bytes)1,383,586,56099,475,200
Size1.3 GB 94.9 MB
Events in quadrant A8,619,138683,236
Events in quadrant B16,006,380509,350
Events in quadrant C8,607,463671,605
Events in quadrant D8,205,237657,522

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305821
B0529140
C0305560
D0293830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7028190.270347%
B7028284740.509391%
C702890.128059%
D70281261.792829%

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 7027 7027 361 361 5.14% 5.14%
B 7028 7028 4095 4095 58.27% 58.27%
C 7028 7028 341 341 4.85% 4.85%
D 7027 7027 413 413 5.88% 5.88%

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 12 243 29158 50.05 2224 2240 537.8
A 0 51 20597 34.13 2224 2240 537.8
A 0 5 14511 22.82 2224 2240 537.8
B 2 32 8183934 18612.05 1844 1848 439.6
B 12 52 297793 673.19 1844 1848 439.6
B 5 191 224667 506.85 1844 1848 439.6
C 15 241 333511 572.04 2066 2142 579.3
C 5 234 98426 166.22 2066 2142 579.3
C 3 79 56706 94.19 2066 2142 579.3
D 10 84 519686 833.47 2005 2077 621.0
D 12 22 145943 231.66 2005 2077 621.0
D 2 107 28118 41.93 2005 2077 621.0

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