ASTROSAT CZTI

Data Quality Report

Orbit 31377

Creation date: 2024-06-27T20:27:30.306220
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/AS1A10_064T05_9000004548_31377cztM0_level2.evt modeM0/AS1A10_064T05_9000004548_31377cztM0_level2_quad_clean.evt
Size (bytes)673,657,92089,153,280
Size642.5 MB 85.0 MB
Events in quadrant A3,000,410611,983
Events in quadrant B4,965,716614,817
Events in quadrant C8,494,267445,527
Events in quadrant D3,507,734579,507

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131551
B0196251
C0297483
D0149331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6415290.452065%
B6416881.371571%
C6415243237.911146%
D6415410.639127%

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 7440 6416 0 0 0.00% 0.00%
B 7441 6417 15 15 0.20% 0.23%
C 7440 6416 1605 1605 21.57% 25.02%
D 7440 6416 15 15 0.20% 0.23%

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 10596 63.1 776 763 155.8
A 3 137 8013 46.52 776 763 155.8
A 0 226 6379 36.04 776 763 155.8
B 6 159 1768936 11987.3 768 746 147.5
B 12 18 70001 469.51 768 746 147.5
B 0 190 59510 398.39 768 746 147.5
C 3 233 5916078 41084.05 613 617 144.0
C 14 238 104396 720.77 613 617 144.0
C 10 22 32627 222.32 613 617 144.0
D 8 195 580360 3236.32 748 727 179.1
D 2 250 92648 513.23 748 727 179.1
D 2 234 25829 140.15 748 727 179.1

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