ASTROSAT CZTI

Data Quality Report

Orbit 36202

Creation date: 2022-06-09T10:06:38.989383
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_097T17_9000005170_36202cztM0_level2.evt modeM0/AS1A11_097T17_9000005170_36202cztM0_level2_quad_clean.evt
Size (bytes)136,480,32035,544,960
Size130.2 MB 33.9 MB
Events in quadrant A865,997239,124
Events in quadrant B849,199246,603
Events in quadrant C1,279,053241,194
Events in quadrant D1,026,324229,605

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036561
B035291
C049351
D040741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162650.307503%
B162640.246002%
C1626432.644526%
D1626472.890529%

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 1626 1626 1 1 0.06% 0.06%
B 1626 1626 1 1 0.06% 0.06%
C 1626 1626 42 42 2.58% 2.58%
D 1626 1626 42 42 2.58% 2.58%

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 72333 1795.61 194 190 40.2
A 8 144 21734 536.22 194 190 40.2
A 15 223 15564 382.65 194 190 40.2
B 4 171 31978 825.5 196 192 38.5
B 5 172 27633 712.66 196 192 38.5
B 0 213 7758 196.49 196 192 38.5
C 4 254 308366 6632.45 195 197 46.5
C 15 214 76128 1634.2 195 197 46.5
C 0 10 63257 1357.19 195 197 46.5
D 12 6 135199 2856.09 192 186 47.3
D 12 235 44747 942.65 192 186 47.3
D 12 233 39752 836.99 192 186 47.3

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