ASTROSAT CZTI

Data Quality Report

Orbit 18624

Creation date: 2024-06-27T17:52:35.578446
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/AS1A05_104T07_9000002780_18624cztM0_level2.evt modeM0/AS1A05_104T07_9000002780_18624cztM0_level2_quad_clean.evt
Size (bytes)284,999,04036,100,800
Size271.8 MB 34.4 MB
Events in quadrant A2,019,820211,428
Events in quadrant B1,968,302213,709
Events in quadrant C1,827,599202,967
Events in quadrant D2,557,598197,496

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083521
B081711
C077091
D0100751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3776310.820975%
B3776170.450212%
C3776200.529661%
D3776651.721398%

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 3776 3776 5 5 0.13% 0.13%
B 3776 3776 2 2 0.05% 0.05%
C 3776 3776 0 0 0.00% 0.00%
D 3776 3776 39 39 1.03% 1.03%

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 14 111 198085 2100.2 464 454 94.1
A 0 13 31700 332.05 464 454 94.1
A 13 254 4963 47.92 464 454 94.1
B 4 80 82047 917.12 458 447 89.0
B 0 230 66919 747.09 458 447 89.0
B 4 216 18803 206.31 458 447 89.0
C 14 238 69620 655.77 443 445 105.5
C 9 221 18080 167.18 443 445 105.5
C 3 233 13561 124.34 443 445 105.5
D 1 52 566951 5124.82 448 434 110.5
D 7 238 286234 2585.4 448 434 110.5
D 2 234 13437 117.63 448 434 110.5

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