ASTROSAT CZTI

Data Quality Report

Orbit 21431

Creation date: 2024-06-27T18:27:44.275539
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/AS1T03_140T01_9000003160_21431cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21431cztM0_level2_quad_clean.evt
Size (bytes)1,197,109,440198,132,480
Size1.1 GB 189.0 MB
Events in quadrant A7,962,7441,227,371
Events in quadrant B8,256,9391,242,745
Events in quadrant C8,007,7621,201,258
Events in quadrant D10,864,4091,143,556

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037016
B036717
C037016
D037117

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365891604
B0371621612
C0365851603
D0467032556

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0281
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17196890.517562%
B172131150.668100%
C171991470.854701%
D171574052.360553%

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 21375 17256 0 0 0.00% 0.00%
B 21375 17291 11 11 0.05% 0.06%
C 21375 17260 0 0 0.00% 0.00%
D 21375 17212 302 302 1.41% 1.75%

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 11 47 41347 95.72 2053 2011 411.0
A 13 254 27241 61.39 2053 2011 411.0
A 0 226 17561 37.84 2053 2011 411.0
B 3 64 77644 191.9 2058 2007 394.1
B 0 230 54927 134.27 2058 2007 394.1
B 12 111 47794 116.17 2058 2007 394.1
C 14 238 307933 660.71 1971 1984 463.1
C 3 233 16764 31.92 1971 1984 463.1
C 13 61 13625 25.14 1971 1984 463.1
D 12 235 1202198 2507.11 1970 1910 478.8
D 7 38 961903 2005.19 1970 1910 478.8
D 1 52 412088 856.76 1970 1910 478.8

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