ASTROSAT CZTI

Data Quality Report

Orbit 36699

Creation date: 2024-06-27T21:30:27.918775
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/AS1C07_001T09_9000005236_36699cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36699cztM0_level2_quad_clean.evt
Size (bytes)401,224,320100,961,280
Size382.6 MB 96.3 MB
Events in quadrant A2,626,545682,211
Events in quadrant B2,878,539682,711
Events in quadrant C3,303,206660,942
Events in quadrant D2,967,534645,680

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114233
B0121782
C0132072
D0125202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A551880.144980%
B5518420.761145%
C55181703.080826%
D5518540.978615%

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 7101 5519 1 1 0.01% 0.02%
B 7101 5519 28 28 0.39% 0.51%
C 7101 5519 135 135 1.90% 2.45%
D 7101 5519 37 37 0.52% 0.67%

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 226571 1848.86 611 598 122.2
A 9 143 11792 91.59 611 598 122.2
A 13 6 11578 89.84 611 598 122.2
B 5 255 149910 1316.52 605 592 113.4
B 0 197 75098 656.91 605 592 113.4
B 5 200 55696 485.84 605 592 113.4
C 0 10 407831 3007.64 586 588 135.4
C 14 254 326680 2408.31 586 588 135.4
C 15 214 251131 1850.35 586 588 135.4
D 13 171 111657 760.58 595 578 146.0
D 2 153 103001 701.31 595 578 146.0
D 2 249 87241 593.4 595 578 146.0

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