ASTROSAT CZTI

Data Quality Report

Orbit 16736

Creation date: 2024-06-27T17:27:00.639302
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_202T01_9000002484_16736cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16736cztM0_level2_quad_clean.evt
Size (bytes)616,668,480125,328,960
Size588.1 MB 119.5 MB
Events in quadrant A5,259,853810,739
Events in quadrant B3,827,158862,006
Events in quadrant C3,431,091824,579
Events in quadrant D5,660,834787,573

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207393
B0161962
C0151462
D0219832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73376478.818318%
B73371211.649175%
C7337811.103993%
D73374516.146927%

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 7688 7339 434 434 5.65% 5.91%
B 7688 7339 17 17 0.22% 0.23%
C 7688 7339 0 0 0.00% 0.00%
D 7688 7339 274 274 3.56% 3.73%

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 15 174 1935411 11465.08 831 812 168.7
A 10 234 119088 700.94 831 812 168.7
A 3 1 11213 61.64 831 812 168.7
B 15 35 169791 1035.55 867 845 163.1
B 10 16 62831 379.94 867 845 163.1
B 7 220 44353 266.68 867 845 163.1
C 14 238 129505 670.15 827 829 192.0
C 0 207 59933 307.82 827 829 192.0
C 3 233 11027 53.11 827 829 192.0
D 1 52 1195281 6025.96 815 790 198.2
D 11 176 690498 3479.43 815 790 198.2
D 2 16 395822 1992.85 815 790 198.2

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