ASTROSAT CZTI

Data Quality Report

Orbit 15766

Creation date: 2024-06-27T17:13:36.876659
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/AS1G08_028T01_9000002334_15766cztM0_level2.evt modeM0/AS1G08_028T01_9000002334_15766cztM0_level2_quad_clean.evt
Size (bytes)519,108,48084,942,720
Size495.1 MB 81.0 MB
Events in quadrant A3,727,352514,637
Events in quadrant B3,940,884525,173
Events in quadrant C3,865,712500,120
Events in quadrant D3,662,393495,001

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161523
B0164162
C0162422
D0163012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77341872.417895%
B77342252.909232%
C77341802.327386%
D77341121.448151%

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 8980 7737 0 0 0.00% 0.00%
B 8980 7737 0 0 0.00% 0.00%
C 8980 7737 0 0 0.00% 0.00%
D 8980 7737 8 8 0.09% 0.10%

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 9 143 15932 75.87 964 941 197.6
A 0 226 8466 38.08 964 941 197.6
A 12 194 6955 30.44 964 941 197.6
B 3 64 100771 534.24 967 941 186.9
B 12 111 22905 117.54 967 941 186.9
B 11 111 19658 100.16 967 941 186.9
C 14 238 139780 632.37 925 929 219.6
C 3 233 69495 312.27 925 929 219.6
C 7 247 45013 200.77 925 929 219.6
D 1 52 92293 373.36 931 906 244.8
D 5 51 28706 113.58 931 906 244.8
D 2 234 27267 107.7 931 906 244.8

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