ASTROSAT CZTI

Data Quality Report

Orbit 27586

Creation date: 2024-06-27T19:41:46.752799
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/AS1C05_019T04_9000003974_27586cztM0_level2.evt modeM0/AS1C05_019T04_9000003974_27586cztM0_level2_quad_clean.evt
Size (bytes)505,195,200100,287,360
Size481.8 MB 95.6 MB
Events in quadrant A3,052,871682,040
Events in quadrant B3,148,398700,246
Events in quadrant C3,202,116677,303
Events in quadrant D5,463,403532,458

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133280
B0136020
C0138050
D0206130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6369280.439629%
B6369320.502434%
C6368751.177764%
D6368122319.205402%

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 7519 6370 1 1 0.01% 0.02%
B 7519 6370 2 2 0.03% 0.03%
C 7518 6369 1 1 0.01% 0.02%
D 7518 6369 609 609 8.10% 9.56%

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 8 192 14622 87.89 787 771 157.6
A 13 254 11276 66.66 787 771 157.6
A 3 137 7326 41.59 787 771 157.6
B 0 230 19219 125.06 788 767 147.5
B 12 111 17897 116.1 788 767 147.5
B 11 111 16192 104.54 788 767 147.5
C 14 238 125563 685.56 774 779 182.0
C 2 16 24043 127.81 774 779 182.0
C 15 208 19060 100.44 774 779 182.0
D 1 52 2432401 15096.39 669 651 161.1
D 6 112 436739 2707.25 669 651 161.1
D 2 250 60303 370.32 669 651 161.1

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