ASTROSAT CZTI

Data Quality Report

Orbit 01305

Creation date: 2024-06-27T14:10:42.334304
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_01305cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01305cztM0_level2_quad_clean.evt
Size (bytes)1,187,398,08088,372,800
Size1.1 GB 84.3 MB
Events in quadrant A9,165,314568,819
Events in quadrant B7,659,507590,911
Events in quadrant C7,037,721573,254
Events in quadrant D11,704,387525,304

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315272
B0269801
C0251241
D0390551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59753535.907950%
B5975300.502092%
C597560.100418%
D597580413.456067%

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 6750 5976 1150 1150 17.04% 19.24%
B 6750 5976 327 327 4.84% 5.47%
C 6750 5977 194 194 2.87% 3.25%
D 6750 5975 2680 2680 39.70% 44.85%

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 2280901 5269.57 1788 1800 432.5
A 15 127 15596 31.9 1788 1800 432.5
A 13 9 9512 17.83 1788 1800 432.5
B 8 4 232576 512.17 1888 1892 450.4
B 12 52 82709 179.43 1888 1892 450.4
B 15 22 61757 132.91 1888 1892 450.4
C 15 241 290241 615.16 1689 1740 469.0
C 8 208 73878 153.82 1689 1740 469.0
C 3 79 28302 56.64 1689 1740 469.0
D 13 169 5425194 10865.37 1606 1666 499.2
D 10 84 161240 319.69 1606 1666 499.2
D 12 22 36721 70.23 1606 1666 499.2

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