ASTROSAT CZTI

Data Quality Report

Orbit 26228

Creation date: 2024-06-27T19:26:21.067537
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_079T03_9000003790_26228cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26228cztM0_level2_quad_clean.evt
Size (bytes)508,815,360109,598,400
Size485.2 MB 104.5 MB
Events in quadrant A3,245,613734,686
Events in quadrant B3,209,789763,531
Events in quadrant C3,425,744724,526
Events in quadrant D5,100,227656,152

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135730
B0134060
C0141750
D0193370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6309530.840070%
B6309470.744968%
C63091051.664289%
D63095408.559201%

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 7654 6310 12 12 0.16% 0.19%
B 7654 6310 3 3 0.04% 0.05%
C 7654 6310 20 20 0.26% 0.32%
D 7654 6310 572 572 7.47% 9.06%

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 132990 829.5 807 793 159.4
A 13 254 10807 62.84 807 793 159.4
A 3 137 7069 39.38 807 793 159.4
B 12 111 17627 110.72 816 798 152.0
B 11 111 15480 96.59 816 798 152.0
B 14 111 13786 85.45 816 798 152.0
C 3 233 251414 1378.15 780 787 181.9
C 14 238 126683 692.28 780 787 181.9
C 0 10 6094 29.18 780 787 181.9
D 1 52 2217254 12467.24 747 729 177.8
D 2 234 24449 133.42 747 729 177.8
D 2 120 19406 105.05 747 729 177.8

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