ASTROSAT CZTI

Data Quality Report

Orbit 09935

Creation date: 2024-06-27T15:52:37.596136
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_107T01_9000001418_09935cztM0_level2.evt modeM0/AS1A03_107T01_9000001418_09935cztM0_level2_quad_clean.evt
Size (bytes)634,556,16087,641,280
Size605.2 MB 83.6 MB
Events in quadrant A5,403,367510,349
Events in quadrant B4,152,595533,502
Events in quadrant C3,829,296535,560
Events in quadrant D5,271,052499,369

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021863165
B01780369
C01728935
D02114493

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01704
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82624976.015493%
B82792753.321657%
C82931822.194622%
D82744325.221175%

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 8819 8305 212 212 2.40% 2.55%
B 8820 8309 14 14 0.16% 0.17%
C 8820 8311 0 0 0.00% 0.00%
D 8820 8309 212 212 2.40% 2.55%

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 15 239 1586029 7867.41 976 953 201.5
A 14 111 43278 210.07 976 953 201.5
A 15 174 13239 60.98 976 953 201.5
B 0 214 76504 389.44 999 973 193.9
B 0 219 42459 213.9 999 973 193.9
B 0 230 41682 209.9 999 973 193.9
C 8 128 12170 48.34 975 979 231.5
C 13 61 7346 27.5 975 979 231.5
C 8 112 6791 25.1 975 979 231.5
D 1 52 942314 3985.15 945 919 236.2
D 8 195 288909 1219.13 945 919 236.2
D 12 233 154874 651.73 945 919 236.2

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