ASTROSAT CZTI

Data Quality Report

Orbit 32656

Creation date: 2024-06-27T20:40:31.719164
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_057T03_9000004722_32656cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32656cztM0_level2_quad_clean.evt
Size (bytes)737,199,36062,956,800
Size703.0 MB 60.0 MB
Events in quadrant A2,986,740433,090
Events in quadrant B7,223,027399,380
Events in quadrant C6,221,636380,027
Events in quadrant D5,562,237346,175

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118283
B0249262
C0219952
D0200982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4944250.505663%
B4944148930.117314%
C494495019.215210%
D494496619.538835%

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 7066 4945 20 20 0.28% 0.40%
B 7066 4945 1352 1352 19.13% 27.34%
C 7066 4945 878 878 12.43% 17.76%
D 7066 4945 921 921 13.03% 18.62%

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 1 39 479013 3842.74 628 619 124.5
A 1 23 17881 138.65 628 619 124.5
A 15 233 15123 116.5 628 619 124.5
B 3 43 3407402 31487.12 578 569 108.2
B 3 26 408433 3769.62 578 569 108.2
B 3 234 398069 3673.83 578 569 108.2
C 8 35 1187570 9016.37 562 567 131.6
C 8 147 709671 5386.29 562 567 131.6
C 10 9 645027 4895.26 562 567 131.6
D 7 80 1596848 12499.72 547 537 127.7
D 8 195 511304 3999.5 547 537 127.7
D 12 218 329631 2576.93 547 537 127.7

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