ASTROSAT CZTI

Data Quality Report

Orbit 21296

Creation date: 2024-06-27T18:26:03.939449
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/AS1T03_140T01_9000003142_21296cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21296cztM0_level2_quad_clean.evt
Size (bytes)597,985,920101,033,280
Size570.3 MB 96.4 MB
Events in quadrant A3,498,926668,286
Events in quadrant B3,730,977671,496
Events in quadrant C3,600,205651,768
Events in quadrant D6,781,030555,643

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152842
B0159013
C0154712
D0252322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7360440.597826%
B7359891.209403%
C73591021.386058%
D7359121316.483218%

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 7730 7363 0 0 0.00% 0.00%
B 7729 7362 9 9 0.12% 0.12%
C 7729 7361 1 1 0.01% 0.01%
D 7729 7362 1130 1130 14.62% 15.35%

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 9 143 53623 293.81 888 872 179.5
A 5 16 13548 70.6 888 872 179.5
A 13 254 10596 54.16 888 872 179.5
B 0 229 52518 304.48 889 868 169.6
B 3 64 36074 207.54 889 868 169.6
B 0 190 29737 170.18 889 868 169.6
C 3 233 156461 779.23 847 851 199.7
C 14 238 133679 665.15 847 851 199.7
C 13 61 5858 25.07 847 851 199.7
D 13 174 1560447 8113.48 789 764 192.2
D 1 52 1327430 6901.33 789 764 192.2
D 7 38 377603 1960.32 789 764 192.2

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