ASTROSAT CZTI

Data Quality Report

Orbit 36791

Creation date: 2024-06-27T21:31:42.955539
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_083T01_9000005242_36791cztM0_level2.evt modeM0/AS1A11_083T01_9000005242_36791cztM0_level2_quad_clean.evt
Size (bytes)225,077,76026,876,160
Size214.7 MB 25.6 MB
Events in quadrant A957,613196,907
Events in quadrant B3,712,546115,252
Events in quadrant C893,913195,096
Events in quadrant D1,138,695184,574

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039771
B0121491
C036711
D044661

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1646352.126367%
B1646135382.199271%
C1646211.275820%
D1646774.678007%

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 1646 1646 26 26 1.58% 1.58%
B 1645 1645 1305 1305 79.33% 79.33%
C 1646 1646 19 19 1.15% 1.15%
D 1646 1646 71 71 4.31% 4.31%

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 103607 2741.53 178 174 37.7
A 10 83 103454 2737.48 178 174 37.7
A 7 16 38443 1014.33 178 174 37.7
B 12 1 3038525 124637.05 117 115 24.4
B 4 171 70443 2884.89 117 115 24.4
B 0 197 45778 1873.12 117 115 24.4
C 15 214 77350 1814.64 175 176 42.5
C 0 207 69820 1637.58 175 176 42.5
C 14 254 34939 817.4 175 176 42.5
D 13 249 147070 3341.26 173 168 44.0
D 5 222 124509 2828.11 173 168 44.0
D 10 203 43596 987.76 173 168 44.0

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