ASTROSAT CZTI

Data Quality Report

Orbit 21477

Creation date: 2024-06-27T18:28:21.136865
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_138T02_9000003172_21477cztM0_level2.evt modeM0/AS1T03_138T02_9000003172_21477cztM0_level2_quad_clean.evt
Size (bytes)336,081,60060,609,600
Size320.5 MB 57.8 MB
Events in quadrant A2,294,641380,962
Events in quadrant B2,386,794390,401
Events in quadrant C2,305,643364,400
Events in quadrant D2,855,368353,475

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099510
B0101900
C099750
D0117010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A492440.081235%
B4924130.264013%
C4924170.345248%
D4924521.056052%

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 4924 4924 0 0 0.00% 0.00%
B 4924 4924 4 4 0.08% 0.08%
C 4924 4924 0 0 0.00% 0.00%
D 4924 4924 53 53 1.08% 1.08%

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 7069 53.99 595 583 120.1
A 0 226 5274 39.05 595 583 120.1
A 3 137 4844 35.47 595 583 120.1
B 0 230 19564 166.95 593 577 113.7
B 0 197 14323 120.87 593 577 113.7
B 12 111 13585 114.38 593 577 113.7
C 14 238 89474 665.48 567 571 133.6
C 13 61 4063 26.14 567 571 133.6
C 3 233 2188 12.1 567 571 133.6
D 1 20 314121 2265.08 571 555 138.4
D 13 174 123159 885.64 571 555 138.4
D 7 38 60020 429.55 571 555 138.4

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