ASTROSAT CZTI

Data Quality Report

Orbit 04808

Creation date: 2024-06-27T14:47:17.154705
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/AS1G05_002T03_9000000608_04808cztM0_level2.evt modeM0/AS1G05_002T03_9000000608_04808cztM0_level2_quad_clean.evt
Size (bytes)615,104,64079,879,680
Size586.6 MB 76.2 MB
Events in quadrant A3,204,058501,266
Events in quadrant B3,404,328503,508
Events in quadrant C3,355,708505,499
Events in quadrant D8,194,550425,436

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143683
B0148162
C0150202
D0291732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6921410.592400%
B6921480.693541%
C69211091.574917%
D6921201329.085392%

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 7676 6922 11 11 0.14% 0.16%
B 7676 6922 11 11 0.14% 0.16%
C 7676 6922 52 52 0.68% 0.75%
D 7676 6922 1951 1951 25.42% 28.19%

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 13 251 75090 453.89 792 776 163.7
A 0 50 44939 269.74 792 776 163.7
A 13 6 12517 71.71 792 776 163.7
B 14 167 121829 781.4 803 783 154.9
B 8 3 34761 219.34 803 783 154.9
B 10 16 25164 157.39 803 783 154.9
C 9 247 358816 2003.69 764 767 178.7
C 13 61 6248 30.67 764 767 178.7
C 8 128 5557 26.8 764 767 178.7
D 13 235 4756542 28586.15 681 660 166.4
D 12 79 215256 1289.87 681 660 166.4
D 5 239 178960 1071.71 681 660 166.4

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