ASTROSAT CZTI

Data Quality Report

Orbit 08788

Creation date: 2024-06-27T15:37:13.308441
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/AS1G07_010T02_9000001222_08788cztM0_level2.evt modeM0/AS1G07_010T02_9000001222_08788cztM0_level2_quad_clean.evt
Size (bytes)139,098,24029,445,120
Size132.7 MB 28.1 MB
Events in quadrant A760,230199,203
Events in quadrant B744,985202,297
Events in quadrant C727,328199,930
Events in quadrant D1,875,941178,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031961
B031471
C030911
D066391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149560.401338%
B149590.602007%
C149520.133779%
D149522515.050167%

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 1495 1495 0 0 0.00% 0.00%
B 1495 1495 0 0 0.00% 0.00%
C 1495 1495 0 0 0.00% 0.00%
D 1494 1494 202 202 13.52% 13.52%

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 12785 316.47 187 183 39.8
A 13 251 12067 298.44 187 183 39.8
A 15 223 5213 126.32 187 183 39.8
B 4 173 14130 375.07 187 182 37.2
B 12 111 3739 95.65 187 182 37.2
B 5 255 3466 88.31 187 182 37.2
C 13 61 1322 25.48 185 186 44.6
C 14 234 1044 19.25 185 186 44.6
C 14 67 787 13.48 185 186 44.6
D 2 16 1128770 25580.64 176 171 44.1
D 7 71 27289 614.65 176 171 44.1
D 2 152 15890 356.28 176 171 44.1

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