ASTROSAT CZTI

Data Quality Report

Orbit 26812

Creation date: 2024-06-27T19:33:14.652766
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/AS1A09_079T01_9000003864_26812cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26812cztM0_level2_quad_clean.evt
Size (bytes)798,903,36094,682,880
Size761.9 MB 90.3 MB
Events in quadrant A4,600,962627,939
Events in quadrant B8,225,783590,780
Events in quadrant C3,406,861633,230
Events in quadrant D7,505,528544,113

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181950
B0289240
C0143410
D0268690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67412323.441626%
B6741233934.698116%
C67411772.625723%
D6741138920.605251%

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 6911 6742 46 46 0.67% 0.68%
B 6910 6741 1968 1968 28.48% 29.19%
C 6911 6742 15 15 0.22% 0.22%
D 6911 6741 1026 1026 14.85% 15.22%

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 13 1458509 8974.39 810 790 162.4
A 13 254 10601 60.4 810 790 162.4
A 6 16 9733 55.06 810 790 162.4
B 0 189 5616382 45369.0 645 629 123.8
B 10 246 22958 180.39 645 629 123.8
B 0 229 18326 142.97 645 629 123.8
C 14 238 124898 672.67 788 790 184.5
C 3 233 99067 532.67 788 790 184.5
C 15 208 97377 523.51 788 790 184.5
D 7 80 3013654 17106.91 734 715 176.1
D 1 52 1171894 6649.74 734 715 176.1
D 2 250 465351 2638.12 734 715 176.1

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