ASTROSAT CZTI

Data Quality Report

Orbit 38665

Creation date: 2024-06-27T21:54:50.415301
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/AS1A12_054T01_9000005392_38665cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38665cztM0_level2_quad_clean.evt
Size (bytes)395,193,60091,837,440
Size376.9 MB 87.6 MB
Events in quadrant A4,017,539605,387
Events in quadrant B2,521,466670,415
Events in quadrant C2,594,095628,346
Events in quadrant D5,094,542516,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151933
B0106992
C0106512
D0187492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51534308.344654%
B5153280.543373%
C515380.155249%
D515368013.196196%

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 7276 5154 367 367 5.04% 7.12%
B 7276 5154 16 16 0.22% 0.31%
C 7276 5154 10 10 0.14% 0.19%
D 7276 5154 602 602 8.27% 11.68%

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 13 248 1282928 10848.15 587 576 118.2
A 10 83 383105 3236.03 587 576 118.2
A 9 143 63771 534.6 587 576 118.2
B 5 172 67251 573.36 605 590 116.3
B 0 155 26266 220.84 605 590 116.3
B 5 184 24193 203.01 605 590 116.3
C 15 214 210939 1541.53 591 596 136.5
C 15 208 57554 417.42 591 596 136.5
C 0 10 20378 144.97 591 596 136.5
D 13 171 1046127 7694.99 554 538 135.9
D 9 49 437239 3213.89 554 538 135.9
D 10 118 416779 3063.32 554 538 135.9

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