ASTROSAT CZTI

Data Quality Report

Orbit 36455

Creation date: 2022-06-27T17:19:20.234504
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/AS1A11_003T08_9000005202_36455cztM0_level2.evt modeM0/AS1A11_003T08_9000005202_36455cztM0_level2_quad_clean.evt
Size (bytes)251,064,00047,263,680
Size239.4 MB 45.1 MB
Events in quadrant A1,674,622306,185
Events in quadrant B2,015,023303,901
Events in quadrant C1,913,281296,325
Events in quadrant D1,774,593289,951

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069012
B080271
C075471
D074521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A330390.272480%
B3303591.786255%
C3303581.755979%
D3303320.968816%

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 4586 3304 6 6 0.13% 0.18%
B 4586 3304 34 34 0.74% 1.03%
C 4586 3304 47 47 1.02% 1.42%
D 4586 3304 19 19 0.41% 0.58%

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 107700 1308.95 399 390 82.0
A 9 143 13443 159.21 399 390 82.0
A 13 254 6021 68.68 399 390 82.0
B 5 172 227768 2990.43 389 380 76.0
B 0 189 83899 1098.38 389 380 76.0
B 5 255 69286 906.2 389 380 76.0
C 0 10 174827 1948.93 380 382 89.5
C 15 214 151108 1683.94 380 382 89.5
C 0 207 60924 676.39 380 382 89.5
D 13 249 48354 501.46 386 375 95.7
D 2 153 47943 497.16 386 375 95.7
D 10 199 41437 429.16 386 375 95.7

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