ASTROSAT CZTI

Data Quality Report

Orbit 26154

Creation date: 2024-06-27T19:25:27.198252
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_138T04_9000003776_26154cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26154cztM0_level2_quad_clean.evt
Size (bytes)508,760,640115,352,640
Size485.2 MB 110.0 MB
Events in quadrant A4,037,203750,389
Events in quadrant B3,321,673793,609
Events in quadrant C3,524,879763,844
Events in quadrant D4,100,305749,564

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161130
B0138120
C0145140
D0163170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62551802.877698%
B6254420.671570%
C62541181.886792%
D62542043.261912%

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 7550 6256 146 146 1.93% 2.33%
B 7549 6255 0 0 0.00% 0.00%
C 7549 6254 5 5 0.07% 0.08%
D 7549 6255 152 152 2.01% 2.43%

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 833622 5077.1 830 816 164.0
A 13 254 9563 53.32 830 816 164.0
A 0 226 7125 38.46 830 816 164.0
B 0 230 27288 167.04 841 821 158.4
B 12 111 18218 109.8 841 821 158.4
B 11 111 16485 98.86 841 821 158.4
C 3 233 161904 839.28 826 833 191.9
C 14 238 131567 681.21 826 833 191.9
C 2 16 10731 51.57 826 833 191.9
D 1 52 802066 4133.24 825 809 193.9
D 12 233 146913 753.67 825 809 193.9
D 8 195 30453 152.92 825 809 193.9

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