ASTROSAT CZTI

Data Quality Report

Orbit 39480

Creation date: 2024-06-27T22:05:08.407585
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_001T02_9000005486_39480cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39480cztM0_level2_quad_clean.evt
Size (bytes)379,402,56089,853,120
Size361.8 MB 85.7 MB
Events in quadrant A3,893,659597,682
Events in quadrant B2,429,465624,545
Events in quadrant C3,094,464586,003
Events in quadrant D4,191,417520,948

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01518364
B01141931
C01292136
D01653243

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5592951.698856%
B5599130.232184%
C5596490.875625%
D55943035.416518%

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 7017 5601 86 86 1.23% 1.54%
B 7016 5606 6 6 0.09% 0.11%
C 7017 5607 37 37 0.53% 0.66%
D 7014 5601 248 248 3.54% 4.43%

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 15 222 1034723 8547.14 591 577 121.0
A 10 83 397279 3278.71 591 577 121.0
A 15 174 111156 913.93 591 577 121.0
B 5 172 60715 525.3 592 575 114.5
B 8 3 30154 258.36 592 575 114.5
B 12 111 14434 121.05 592 575 114.5
C 15 208 450355 3347.94 575 579 134.3
C 15 214 232198 1724.07 575 579 134.3
C 10 70 75427 557.14 575 579 134.3
D 12 0 1243539 8943.23 566 549 139.0
D 12 227 372356 2675.13 566 549 139.0
D 2 249 206463 1481.54 566 549 139.0

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