ASTROSAT CZTI

Data Quality Report

Orbit 00308

Creation date: 2024-06-27T13:59:00.853051
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/AS1P01_126T04_9000000036_00308cztM0_level2.evt modeM0/AS1P01_126T04_9000000036_00308cztM0_level2_quad_clean.evt
Size (bytes)798,710,40051,272,640
Size761.7 MB 48.9 MB
Events in quadrant A6,195,078295,356
Events in quadrant B6,205,869296,996
Events in quadrant C5,777,282291,505
Events in quadrant D5,646,198285,524

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222822
B0223411
C0210671
D0207101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546440.073206%
B546420.036603%
C546410.018302%
D546490.164714%

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 7199 5465 110 110 1.53% 2.01%
B 7199 5465 66 66 0.92% 1.21%
C 7199 5465 40 40 0.56% 0.73%
D 7199 5465 47 47 0.65% 0.86%

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 0 69 46531 128.17 1588 1574 350.7
A 13 239 5915 12.38 1588 1574 350.7
A 15 4 4910 9.51 1588 1574 350.7
B 15 80 21507 52.94 1606 1615 375.7
B 8 54 15866 37.93 1606 1615 375.7
B 5 46 15038 35.73 1606 1615 375.7
C 10 19 13902 30.12 1460 1513 411.4
C 2 192 8729 17.54 1460 1513 411.4
C 1 1 7901 15.53 1460 1513 411.4
D 13 7 86388 194.34 1386 1441 437.1
D 13 216 59894 133.73 1386 1441 437.1
D 1 5 50219 111.59 1386 1441 437.1

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