ASTROSAT CZTI

Data Quality Report

Orbit 01223

Creation date: 2024-06-27T14:09:21.678595
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_007T02_9000000220_01223cztM0_level2.evt modeM0/AS1G04_007T02_9000000220_01223cztM0_level2_quad_clean.evt
Size (bytes)1,149,603,840104,002,560
Size1.1 GB 99.2 MB
Events in quadrant A8,689,096683,826
Events in quadrant B9,186,631674,071
Events in quadrant C8,461,364653,963
Events in quadrant D8,015,879650,849

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307911
B0322181
C0301211
D0287771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6993270.386100%
B6993260.371800%
C699350.071500%
D6993160.228800%

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 7448 6994 280 280 3.76% 4.00%
B 7448 6994 332 332 4.46% 4.75%
C 7448 6994 161 161 2.16% 2.30%
D 7448 6994 171 171 2.30% 2.44%

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 15 127 163476 308.45 2166 2170 523.0
A 12 243 136933 257.69 2166 2170 523.0
A 0 51 29643 52.53 2166 2170 523.0
B 2 32 428100 812.98 2230 2239 523.8
B 5 191 61155 112.47 2230 2239 523.8
B 6 53 53766 98.37 2230 2239 523.8
C 15 241 366647 637.47 2052 2123 571.8
C 3 79 42855 71.23 2052 2123 571.8
C 3 111 32824 53.69 2052 2123 571.8
D 1 239 275168 436.81 2007 2078 625.2
D 13 169 74480 115.81 2007 2078 625.2
D 13 70 64408 99.7 2007 2078 625.2

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