ASTROSAT CZTI

Data Quality Report

Orbit 12311

Creation date: 2024-06-27T16:25:17.503475
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/AS1A04_183T02_9000001816_12311cztM0_level2.evt modeM0/AS1A04_183T02_9000001816_12311cztM0_level2_quad_clean.evt
Size (bytes)1,321,689,600229,515,840
Size1.2 GB 218.9 MB
Events in quadrant A10,188,3951,418,235
Events in quadrant B9,623,7981,446,510
Events in quadrant C8,401,6991,445,885
Events in quadrant D10,556,1041,358,271

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426554
B0407923
C0380583
D0442403

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186152971.595488%
B186152781.493419%
C18615940.504969%
D186154762.557078%

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 20426 18619 22 22 0.11% 0.12%
B 20426 18619 34 34 0.17% 0.18%
C 20426 18619 3 3 0.01% 0.02%
D 20426 18619 320 320 1.57% 1.72%

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 1 162 593292 1318.75 2186 2140 448.3
A 1 178 320327 709.82 2186 2140 448.3
A 1 161 275754 610.38 2186 2140 448.3
B 4 239 662311 1569.26 2197 2140 420.7
B 3 64 79579 184.08 2197 2140 420.7
B 0 190 67784 156.04 2197 2140 420.7
C 4 254 59040 114.39 2138 2149 497.4
C 13 61 15926 27.7 2138 2149 497.4
C 14 234 9608 15.0 2138 2149 497.4
D 1 52 1582877 3134.45 2109 2056 504.3
D 5 222 340610 671.28 2109 2056 504.3
D 13 249 147349 288.09 2109 2056 504.3

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