ASTROSAT CZTI

Data Quality Report

Orbit 24822

Creation date: 2024-06-27T19:10:15.173316
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/AS1A07_045T01_9000003628_24822cztM0_level2.evt modeM0/AS1A07_045T01_9000003628_24822cztM0_level2_quad_clean.evt
Size (bytes)468,334,08083,998,080
Size446.6 MB 80.1 MB
Events in quadrant A3,185,456545,400
Events in quadrant B3,613,506549,219
Events in quadrant C3,525,927514,933
Events in quadrant D3,433,585497,114

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131702
B0146312
C0143542
D0140862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6264240.383142%
B62641362.171137%
C6264961.532567%
D6263881.405077%

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 7484 6265 0 0 0.00% 0.00%
B 7484 6265 59 59 0.79% 0.94%
C 7484 6265 1 1 0.01% 0.02%
D 7483 6264 72 72 0.96% 1.15%

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 13 254 9084 50.14 826 811 165.0
A 3 137 7289 39.26 826 811 165.0
A 0 226 7068 37.92 826 811 165.0
B 3 64 312836 2015.58 817 797 154.8
B 15 32 87931 562.83 817 797 154.8
B 12 111 18479 114.21 817 797 154.8
C 7 247 342009 1872.27 782 788 182.2
C 14 238 126727 691.02 782 788 182.2
C 10 218 6168 29.52 782 788 182.2
D 8 195 258424 1353.58 782 761 190.4
D 9 35 164946 862.52 782 761 190.4
D 1 52 49787 257.55 782 761 190.4

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