ASTROSAT CZTI

Data Quality Report

Orbit 01307

Creation date: 2024-06-27T14:10:44.520222
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_002T02_9000000230_01307cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01307cztM0_level2_quad_clean.evt
Size (bytes)1,517,555,520103,726,080
Size1.4 GB 98.9 MB
Events in quadrant A9,618,885683,091
Events in quadrant B9,509,361697,995
Events in quadrant C8,588,102676,357
Events in quadrant D17,769,160580,535

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336851
B0333430
C0306640
D0581230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72152483.437283%
B7215340.471240%
C721510.013860%
D7215219730.450450%

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 7215 7215 714 714 9.90% 9.90%
B 7215 7215 480 480 6.65% 6.65%
C 7215 7215 233 233 3.23% 3.23%
D 7215 7215 5427 5427 75.22% 75.22%

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 4 32 1049759 1932.84 2228 2238 542.0
A 15 127 14573 22.76 2228 2238 542.0
A 11 79 8829 12.16 2228 2238 542.0
B 8 4 334680 605.18 2314 2325 549.2
B 6 53 182849 328.71 2314 2325 549.2
B 12 52 60172 105.33 2314 2325 549.2
C 15 241 362233 620.86 2070 2140 580.0
C 3 9 57768 95.91 2070 2140 580.0
C 3 79 43591 71.47 2070 2140 580.0
D 13 169 9960758 16868.78 1890 1953 590.4
D 10 84 393367 663.0 1890 1953 590.4
D 2 88 179783 301.22 1890 1953 590.4

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