ASTROSAT CZTI

Data Quality Report

Orbit 01359

Creation date: 2024-06-27T14:11:29.786359
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_01359cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01359cztM0_level2_quad_clean.evt
Size (bytes)1,202,673,60096,108,480
Size1.1 GB 91.7 MB
Events in quadrant A12,996,096521,846
Events in quadrant B8,005,426663,616
Events in quadrant C7,340,427657,257
Events in quadrant D7,666,353628,904

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433873
B0282392
C0262492
D0272792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6274210633.567102%
B6274210.334715%
C627460.095633%
D62741011.609818%

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 7528 6274 2975 2975 39.52% 47.42%
B 7529 6274 272 272 3.61% 4.34%
C 7529 6275 156 156 2.07% 2.49%
D 7529 6275 519 519 6.89% 8.27%

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 6618849 17312.26 1599 1611 382.2
A 4 32 110545 285.0 1599 1611 382.2
A 15 233 78765 201.85 1599 1611 382.2
B 8 4 279775 600.35 1985 1990 462.7
B 12 52 89072 188.2 1985 1990 462.7
B 5 249 26929 53.9 1985 1990 462.7
C 15 241 194870 386.81 1818 1883 498.9
C 3 111 19195 34.7 1818 1883 498.9
C 7 159 13592 23.47 1818 1883 498.9
D 9 53 523472 987.0 1733 1791 528.6
D 12 22 469313 884.53 1733 1791 528.6
D 13 73 58415 107.13 1733 1791 528.6

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