ASTROSAT CZTI

Data Quality Report

Orbit 08917

Creation date: 2024-06-27T15:38:57.904012
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/AS1A03_092T01_9000001240_08917cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08917cztM0_level2_quad_clean.evt
Size (bytes)433,748,160104,601,600
Size413.7 MB 99.8 MB
Events in quadrant A3,287,277691,018
Events in quadrant B3,170,596696,964
Events in quadrant C2,972,437676,845
Events in quadrant D3,274,467660,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137485
B0133677
C0131135
D0139069

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63441362.143758%
B63421171.844844%
C6343791.245467%
D63421211.907915%

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 7520 6345 12 12 0.16% 0.19%
B 7520 6345 0 0 0.00% 0.00%
C 7520 6345 0 0 0.00% 0.00%
D 7520 6345 17 17 0.23% 0.27%

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 5 148244 923.59 794 778 159.7
A 5 16 43391 266.89 794 778 159.7
A 15 174 28570 174.06 794 778 159.7
B 0 214 57504 382.23 791 775 148.4
B 12 111 15476 99.05 791 775 148.4
B 0 197 13838 88.02 791 775 148.4
C 13 61 5799 28.93 761 765 174.0
C 3 254 1988 7.03 761 765 174.0
C 14 67 1984 7.01 761 765 174.0
D 1 52 155150 763.25 765 746 202.3
D 8 195 66737 326.21 765 746 202.3
D 2 14 51386 250.32 765 746 202.3

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