ASTROSAT CZTI

Data Quality Report

Orbit 08415

Creation date: 2024-06-27T15:32:27.160528
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/AS1A02_158T01_9000001184_08415cztM0_level2.evt modeM0/AS1A02_158T01_9000001184_08415cztM0_level2_quad_clean.evt
Size (bytes)557,354,88085,904,640
Size531.5 MB 81.9 MB
Events in quadrant A3,960,038509,585
Events in quadrant B4,189,726516,373
Events in quadrant C3,898,270511,450
Events in quadrant D4,268,502487,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173294
B0178653
C0173053
D0184183

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82902132.569361%
B82902282.750302%
C8290981.182147%
D82901842.219542%

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 8730 8293 0 0 0.00% 0.00%
B 8730 8293 1 1 0.01% 0.01%
C 8730 8293 2 2 0.02% 0.02%
D 8730 8292 39 39 0.45% 0.47%

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 13 251 21728 98.29 1020 993 210.9
A 5 16 9539 40.51 1020 993 210.9
A 0 226 9454 40.11 1020 993 210.9
B 0 214 129268 646.33 1022 996 198.5
B 5 255 23365 112.71 1022 996 198.5
B 12 111 20773 99.65 1022 996 198.5
C 1 16 33045 138.54 990 993 231.4
C 13 61 7556 28.37 990 993 231.4
C 8 222 2874 8.13 990 993 231.4
D 4 95 132459 542.47 984 952 242.4
D 14 34 99667 407.2 984 952 242.4
D 12 221 77116 314.18 984 952 242.4

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