ASTROSAT CZTI

Data Quality Report

Orbit 31276

Creation date: 2024-06-27T20:26:02.740330
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/AS1T04_024T01_9000004530_31276cztM0_level2.evt modeM0/AS1T04_024T01_9000004530_31276cztM0_level2_quad_clean.evt
Size (bytes)472,596,48086,362,560
Size450.7 MB 82.4 MB
Events in quadrant A2,845,957564,488
Events in quadrant B4,585,562560,790
Events in quadrant C3,045,445534,625
Events in quadrant D3,427,895535,554

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122581
B0182841
C0128751
D0142771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6005380.632806%
B60061021.698302%
C60061252.081252%
D6006701.165501%

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 7035 6006 0 0 0.00% 0.00%
B 7036 6007 8 8 0.11% 0.13%
C 7036 6007 9 9 0.13% 0.15%
D 7036 6007 24 24 0.34% 0.40%

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 13 254 11779 74.83 737 722 147.8
A 3 137 7498 45.86 737 722 147.8
A 0 226 6138 36.65 737 722 147.8
B 6 159 1588300 11456.43 724 706 138.6
B 4 80 82915 593.24 724 706 138.6
B 10 247 40718 288.74 724 706 138.6
C 14 238 122267 751.2 694 698 161.8
C 3 233 96806 593.87 694 698 161.8
C 0 10 87468 536.17 694 698 161.8
D 8 195 562011 3225.71 702 684 174.0
D 2 250 106096 605.76 702 684 174.0
D 12 233 94242 537.64 702 684 174.0

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