ASTROSAT CZTI

Data Quality Report

Orbit 27038

Creation date: 2024-06-27T19:35:47.401740
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_120T02_9000003904_27038cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27038cztM0_level2_quad_clean.evt
Size (bytes)671,641,92099,074,880
Size640.5 MB 94.5 MB
Events in quadrant A6,845,648600,955
Events in quadrant B4,231,579690,907
Events in quadrant C3,280,174699,318
Events in quadrant D5,589,129601,149

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244600
B0163490
C0134680
D0205710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5820143624.673540%
B58215078.709844%
C58211051.803814%
D5820104417.938144%

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 7140 5820 1197 1197 16.76% 20.57%
B 7141 5821 428 428 5.99% 7.35%
C 7141 5821 0 0 0.00% 0.00%
D 7139 5819 946 946 13.25% 16.26%

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 14 235 3897809 26454.51 737 724 147.3
A 0 13 88616 596.64 737 724 147.3
A 8 192 16200 105.06 737 724 147.3
B 0 189 1066009 7055.15 801 785 151.0
B 0 219 28125 181.08 801 785 151.0
B 12 111 16963 107.15 801 785 151.0
C 14 238 131899 697.62 806 817 187.9
C 15 208 5997 27.57 806 817 187.9
C 13 61 5503 24.94 806 817 187.9
D 1 52 2550357 14757.28 732 718 172.8
D 2 250 130959 753.83 732 718 172.8
D 5 222 116091 667.77 732 718 172.8

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