ASTROSAT CZTI

Data Quality Report

Orbit 45577

Creation date: 2024-06-27T23:13:50.572631
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/AS1A13_071T04_9000006110_45577cztM0_level2.fits modeM0/AS1A13_071T04_9000006110_45577cztM0_level2_quad_clean.evt
Size (bytes)475,776,000103,726,080
Size453.7 MB 98.9 MB
Events in quadrant A5,455,294706,438
Events in quadrant B3,189,951723,998
Events in quadrant C3,851,177653,438
Events in quadrant D4,636,911626,457

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202711
B0135941
C0158191
D0180731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61641963.179753%
B61641442.336145%
C61644276.927320%
D61642423.926022%

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 7284 6165 7 7 0.10% 0.11%
B 7284 6165 43 43 0.59% 0.70%
C 7284 6165 365 365 5.01% 5.92%
D 7284 6165 152 152 2.09% 2.47%

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 10 83 2645931 18195.24 707 691 145.4
A 0 243 34561 232.97 707 691 145.4
A 7 192 20031 133.03 707 691 145.4
B 0 189 106886 786.11 703 683 135.1
B 5 172 76238 559.25 703 683 135.1
B 15 201 75567 554.29 703 683 135.1
C 12 2 1203240 7661.79 670 674 157.0
C 2 14 20522 126.45 670 674 157.0
C 14 254 11083 66.31 670 674 157.0
D 11 241 678429 3940.88 685 662 172.0
D 1 52 459901 2670.25 685 662 172.0
D 11 224 266295 1544.53 685 662 172.0

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