ASTROSAT CZTI

Data Quality Report

Orbit 18704

Creation date: 2024-06-27T17:53:44.400771
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/AS1A05_165T07_9000002796_18704cztM0_level2.evt modeM0/AS1A05_165T07_9000002796_18704cztM0_level2_quad_clean.evt
Size (bytes)623,629,440102,571,200
Size594.7 MB 97.8 MB
Events in quadrant A3,800,430655,266
Events in quadrant B3,871,887665,609
Events in quadrant C6,096,542631,457
Events in quadrant D4,603,527625,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161712
B0163342
C0234872
D0190133

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7597750.987232%
B7597811.066210%
C75982293.013951%
D75972933.856786%

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 9407 7599 9 9 0.10% 0.12%
B 9407 7599 7 7 0.07% 0.09%
C 9408 7600 0 0 0.00% 0.00%
D 9407 7599 183 183 1.95% 2.41%

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 9 143 123222 644.24 945 924 189.8
A 11 29 17475 87.19 945 924 189.8
A 6 16 13516 66.33 945 924 189.8
B 10 245 66856 362.2 946 922 182.0
B 0 197 52788 284.92 946 922 182.0
B 0 189 21918 115.34 946 922 182.0
C 3 233 2418655 11382.39 904 909 212.4
C 14 238 140579 657.55 904 909 212.4
C 0 207 15739 69.82 904 909 212.4
D 1 52 915673 4146.38 902 873 220.6
D 7 238 207159 935.0 902 873 220.6
D 2 234 32317 142.52 902 873 220.6

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